{"title":"Nuts \u0026 Washers","description":null,"products":[{"product_id":"din-127b-split-lock-washers-zinc-plated","title":"DIYUK DIN 127B Split Spring Washers, Zinc Plated Steel Helical Lock Type for Bolts, Nuts \u0026 Screws, Anti-Vibration, M6-M30, Packs of 2-200","description":"\u003cp\u003e\u003cstrong\u003eZinc plated spring steel split (helical spring) lock washers manufactured to DIN 127, Type B, in ten metric sizes from M6 to M30\u003c\/strong\u003e, formed from a coiled spring-steel ring with two square-cut, slightly offset ends. They sit under the nut or bolt head of a threaded joint and work mechanically, rather than through friction alone, to resist the loosening effect of vibration and repeated movement.\u003c\/p\u003e\n\u003cp\u003eDIN 127 was officially withdrawn from the German DIN catalogue, but the Type B (square-end) profile has remained the de facto industry reference for helical spring washer dimensions ever since, and continues to be manufactured and stocked worldwide under the same designation. Each washer here is pressed from spring steel and zinc plated, giving a bright, general-purpose corrosion-resistant finish.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow they work:\u003c\/strong\u003e when the fastener is tightened, the helical coil is compressed flat and stores spring energy. That stored energy continues pushing back against the bearing face of the nut or bolt head, helping the joint retain clamping tension as it settles in service or is subjected to vibration. The sharp, square-cut ends of the coil also bite very slightly into the mating surfaces on each side, adding a small amount of mechanical resistance to counter-rotation on top of the spring action.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured to the DIN 127 Type B profile, the long-standing industry reference for helical spring lock washer dimensions, even though the standard itself was formally withdrawn from the DIN catalogue.\u003c\/li\u003e\n\u003cli\u003ePressed from spring steel for durability, flexibility, consistent spring-back and reliable clamping force retention under load.\u003c\/li\u003e\n\u003cli\u003eZinc plated, giving a bright, general-purpose corrosion-resistant finish.\u003c\/li\u003e\n\u003cli\u003eHelical coil design stores spring energy when compressed, continuing to push back against the bearing face as a joint settles or experiences vibration.\u003c\/li\u003e\n\u003cli\u003eFlexible structure for even load distribution and vibration damping, reducing pressure on the fastening elements and protecting them against damage.\u003c\/li\u003e\n\u003cli\u003eMinimises the effects of vibration and reduces noise.\u003c\/li\u003e\n\u003cli\u003eSharp, square-cut offset coil ends bite slightly into the bearing surfaces on each side, adding mechanical resistance to counter-rotation.\u003c\/li\u003e\n\u003cli\u003eStraightforward metric bore sizing: simply match the washer to the fastener thread size, in the same way as fitting a standard flat washer.\u003c\/li\u003e\n\u003cli\u003eAvailable from M6 up to M30, covering the great majority of standard metric fastener sizes used in general engineering and construction.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eThread size\u003c\/th\u003e\n\u003cth\u003eInner diameter (d1)\u003c\/th\u003e\n\u003cth\u003eOuter diameter (d2) max\u003c\/th\u003e\n\u003cth\u003eThickness (s)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e6.1–6.5mm (0.24–0.26in)\u003c\/td\u003e\n\u003ctd\u003e11.8mm (0.46in)\u003c\/td\u003e\n\u003ctd\u003e1.5–1.7mm (0.06–0.07in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e8.1–8.5mm (0.32–0.33in)\u003c\/td\u003e\n\u003ctd\u003e14.8mm (0.58in)\u003c\/td\u003e\n\u003ctd\u003e1.9–2.1mm (0.07–0.08in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e10.2–10.7mm (0.40–0.42in)\u003c\/td\u003e\n\u003ctd\u003e18.1mm (0.71in)\u003c\/td\u003e\n\u003ctd\u003e2.05–2.35mm (0.08–0.09in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e12.2–12.7mm (0.48–0.50in)\u003c\/td\u003e\n\u003ctd\u003e21.1mm (0.83in)\u003c\/td\u003e\n\u003ctd\u003e2.35–2.65mm (0.09–0.10in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM14\u003c\/td\u003e\n\u003ctd\u003e14.2–14.7mm (0.56–0.58in)\u003c\/td\u003e\n\u003ctd\u003e24.1mm (0.95in)\u003c\/td\u003e\n\u003ctd\u003e2.85–3.15mm (0.11–0.12in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e16.2–17.0mm (0.64–0.67in)\u003c\/td\u003e\n\u003ctd\u003e27.4mm (1.08in)\u003c\/td\u003e\n\u003ctd\u003e3.3–3.7mm (0.13–0.15in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM18\u003c\/td\u003e\n\u003ctd\u003e18.2–19.0mm (0.72–0.75in)\u003c\/td\u003e\n\u003ctd\u003e29.4mm (1.16in)\u003c\/td\u003e\n\u003ctd\u003e3.3–3.7mm (0.13–0.15in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003ctd\u003e20.2–21.2mm (0.80–0.83in)\u003c\/td\u003e\n\u003ctd\u003e33.6mm (1.32in)\u003c\/td\u003e\n\u003ctd\u003e3.8–4.2mm (0.15–0.17in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM24\u003c\/td\u003e\n\u003ctd\u003e24.5–25.5mm (0.96–1.00in)\u003c\/td\u003e\n\u003ctd\u003e40mm (1.57in)\u003c\/td\u003e\n\u003ctd\u003e4.8–5.2mm (0.19–0.20in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM30\u003c\/td\u003e\n\u003ctd\u003e30.5–31.7mm (1.20–1.25in)\u003c\/td\u003e\n\u003ctd\u003e48.2mm (1.90in)\u003c\/td\u003e\n\u003ctd\u003e5.8–6.2mm (0.23–0.24in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial and finish:\u003c\/strong\u003e spring steel, zinc plated for general-purpose corrosion resistance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMechanical and electronic constructions, and industrial applications.\u003c\/li\u003e\n\u003cli\u003eAutomotive and general machinery assembly, where bolted joints are subject to ongoing vibration from moving parts or road use.\u003c\/li\u003e\n\u003cli\u003eGeneral construction and steel fabrication, on structural and secondary fixings where a joint needs to hold its clamping tension over time.\u003c\/li\u003e\n\u003cli\u003eAgricultural equipment, where machinery routinely sees sustained vibration, shock loading and exposure to the elements.\u003c\/li\u003e\n\u003cli\u003eFencing and gate hardware, on hinges, posts and fixings that experience repeated movement and knocks in everyday use.\u003c\/li\u003e\n\u003cli\u003eAny bolted joint, in a workshop, garage or on site, that is subject to vibration or repeated movement and would otherwise be prone to working loose over time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Guidance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEasy to install: match the washer bore to the corresponding metric bolt, screw or stud size (for example, fit an M10 washer to an M10 fastener) and place it directly under the nut or bolt head before tightening. Tighten the fastener to the correct torque for the joint; the washer is compressed flat as it is tightened, which is what allows the coil to store spring energy and continue pushing back against the bearing face in service.\u003c\/p\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich size do I need?\u003c\/strong\u003e\u003cbr\u003eMatch the washer to the thread size of your bolt, screw or stud, for example an M10 washer for an M10 fastener. Ten sizes are available, from M6 to M30.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere does the spring washer go?\u003c\/strong\u003e\u003cbr\u003eDirectly under the nut or bolt head, before tightening. As the fastener is tightened, the coil is compressed flat and keeps pushing back against the bearing face in service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does DIN 127 Type B mean?\u003c\/strong\u003e\u003cbr\u003eType B is the square-end profile of the DIN 127 helical spring washer: the square-cut ends bite slightly into the bearing surfaces on each side.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat finish do they have?\u003c\/strong\u003e\u003cbr\u003eThe spring steel washers are zinc plated, giving a bright, general-purpose corrosion-resistant finish.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat pack sizes are available?\u003c\/strong\u003e\u003cbr\u003eEvery size comes in packs of 2, 10, 25, 50, 100 or 200 washers.\u003c\/p\u003e","brand":"DIYUK","offers":[{"title":"M6 (6mm) \/ 2","offer_id":40003490185350,"sku":"DIN127-ZINC-M6-2","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M6 (6mm) \/ 10","offer_id":40003490250886,"sku":"DIN127-ZINC-M6-10","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M6 (6mm) \/ 25","offer_id":40003490283654,"sku":"DIN127-ZINC-M6-25","price":6.1,"currency_code":"GBP","in_stock":true},{"title":"M6 (6mm) \/ 50","offer_id":40003490316422,"sku":"DIN127-ZINC-M6-50","price":6.23,"currency_code":"GBP","in_stock":true},{"title":"M6 (6mm) \/ 100","offer_id":40528950395014,"sku":"DIN127-ZINC-M6-100","price":7.72,"currency_code":"GBP","in_stock":true},{"title":"M6 (6mm) \/ 200","offer_id":40528950427782,"sku":"DIN127-ZINC-M6-200","price":8.72,"currency_code":"GBP","in_stock":true},{"title":"M8 (8mm) \/ 2","offer_id":40003490381958,"sku":"DIN127-ZINC-M8-2","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M8 (8mm) \/ 10","offer_id":40003490447494,"sku":"DIN127-ZINC-M8-10","price":5.6,"currency_code":"GBP","in_stock":true},{"title":"M8 (8mm) \/ 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100","offer_id":40528950624390,"sku":"DIN127-ZINC-M12-100","price":9.22,"currency_code":"GBP","in_stock":true},{"title":"M12 (12mm) \/ 200","offer_id":40528950689926,"sku":"DIN127-ZINC-M12-200","price":13.72,"currency_code":"GBP","in_stock":true},{"title":"M14 (14mm) \/ 2","offer_id":40528955572358,"sku":"DIN127-ZINC-M14-2","price":5.6,"currency_code":"GBP","in_stock":true},{"title":"M14 (14mm) \/ 10","offer_id":40528955605126,"sku":"DIN127-ZINC-M14-10","price":6.23,"currency_code":"GBP","in_stock":true},{"title":"M14 (14mm) \/ 25","offer_id":40528955637894,"sku":"DIN127-ZINC-M14-25","price":7.72,"currency_code":"GBP","in_stock":true},{"title":"M14 (14mm) \/ 50","offer_id":40528955670662,"sku":"DIN127-ZINC-M14-50","price":8.72,"currency_code":"GBP","in_stock":true},{"title":"M14 (14mm) \/ 100","offer_id":40528955703430,"sku":"DIN127-ZINC-M14-100","price":10.72,"currency_code":"GBP","in_stock":true},{"title":"M14 (14mm) \/ 200","offer_id":40528955736198,"sku":"DIN127-ZINC-M14-200","price":17.47,"currency_code":"GBP","in_stock":true},{"title":"M16 (16mm) \/ 2","offer_id":40528955768966,"sku":"DIN127-ZINC-M16-2","price":5.6,"currency_code":"GBP","in_stock":true},{"title":"M16 (16mm) \/ 10","offer_id":40528955801734,"sku":"DIN127-ZINC-M16-10","price":7.35,"currency_code":"GBP","in_stock":true},{"title":"M16 (16mm) \/ 25","offer_id":40528955834502,"sku":"DIN127-ZINC-M16-25","price":8.1,"currency_code":"GBP","in_stock":true},{"title":"M16 (16mm) \/ 50","offer_id":40528955867270,"sku":"DIN127-ZINC-M16-50","price":9.47,"currency_code":"GBP","in_stock":true},{"title":"M16 (16mm) \/ 100","offer_id":40528955900038,"sku":"DIN127-ZINC-M16-100","price":14.22,"currency_code":"GBP","in_stock":true},{"title":"M16 (16mm) \/ 200","offer_id":40528955932806,"sku":"DIN127-ZINC-M16-200","price":20.6,"currency_code":"GBP","in_stock":true},{"title":"M18 (18mm) \/ 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50","offer_id":58723464348029,"sku":"DIN127-ZINC-M30-50","price":19.47,"currency_code":"GBP","in_stock":true},{"title":"M30 (30mm) \/ 100","offer_id":58723464380797,"sku":"DIN127-ZINC-M30-100","price":29.35,"currency_code":"GBP","in_stock":false},{"title":"M30 (30mm) \/ 200","offer_id":58723464413565,"sku":"DIN127-ZINC-M30-200","price":48.97,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/0245\/6454\/files\/din1273.png?v=1761685247"},{"product_id":"a4-marine-grade-stainless-steel-flat-washers-din-125-iso-7089","title":"DIYUK A4 316 Marine Grade Stainless Steel Flat Washers, DIN 125 \/ ISO 7089, M1.6-M30, 18 Sizes","description":"\u003cp\u003eEngineered for the most demanding environments, these Form A flat washers in 18 sizes from M1.6 to M30 are made from A4 (316) marine grade stainless steel: DIN 125 Form A, similar to ISO 7089. They are the natural choice wherever a bolted joint has to shrug off saltwater, de-icing salt, washdown chemicals or sustained damp, without staining, pitting or rust bleed. Your finished work stays clean, and so does your reputation for a job done properly.\u003c\/p\u003e\n\n\u003cp\u003eA4 (316) is a molybdenum-alloyed stainless steel. The molybdenum is what sets A4 apart from standard A2 stainless: it improves resistance to pitting and crevice corrosion caused by chlorides, which is why A4 is widely specified as \"marine grade\" for coastal, washdown and chemical-exposure applications. Each washer has a plain, unplated natural finish – stainless steel needs no surface coating to resist corrosion, so there is no plating to wear, flake or scratch through in service.\u003c\/p\u003e\n\n\u003cp\u003eThese are DIN 125 Form A washers, similar to ISO 7089: plain flat washers without a chamfer. Form A washers have a plain square edge on both faces (as opposed to the chamfered edge of Form B \/ ISO 7090), so they can be fitted either way up and seat flush against the mating surface.\u003c\/p\u003e\n\n\u003cp\u003eThis listing covers 18 sizes from M1.6 up to M30, as single washers or larger packs, so you can order the quantity the job needs.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA4 (316) marine grade stainless steel\u003c\/strong\u003e – molybdenum-alloyed for genuine resistance to saltwater, chlorides and chemical exposure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN 125 Form A, similar to ISO 7089\u003c\/strong\u003e – square-edged (non-chamfered) profile for flush, either-way-up fitting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlain natural finish\u003c\/strong\u003e – no plating to wear through; the corrosion resistance is inherent to the material, not a coating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e18 sizes, M1.6 to M30\u003c\/strong\u003e – covering everything from precision electronics fixings up to heavy structural bolts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle washers or larger packs\u003c\/strong\u003e – order the quantity you need for the job in hand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness HV 140\u003c\/strong\u003e – from the product data sheet, with inside diameter, outside diameter and thickness listed for every size below.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specification\u003c\/h3\u003e\n\u003cp\u003eDimensions below are from the product data sheet for every size in this listing. Metric figures are the governing dimension; imperial equivalents are shown for reference.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Size (M)\u003c\/th\u003e\n\u003cth\u003eInside Ø d1\u003c\/th\u003e\n\u003cth\u003eOutside Ø d2\u003c\/th\u003e\n\u003cth\u003eThickness h\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eM1.6\u003c\/td\u003e\n\u003ctd\u003e1.7 mm (0.067\")\u003c\/td\u003e\n\u003ctd\u003e4.0 mm (0.157\")\u003c\/td\u003e\n\u003ctd\u003e0.3 mm (0.012\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM2\u003c\/td\u003e\n\u003ctd\u003e2.2 mm (0.087\")\u003c\/td\u003e\n\u003ctd\u003e5.0 mm (0.197\")\u003c\/td\u003e\n\u003ctd\u003e0.3 mm (0.012\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003e3.2 mm (0.126\")\u003c\/td\u003e\n\u003ctd\u003e7.0 mm (0.276\")\u003c\/td\u003e\n\u003ctd\u003e0.5 mm (0.020\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e4.3 mm (0.169\")\u003c\/td\u003e\n\u003ctd\u003e9.0 mm (0.354\")\u003c\/td\u003e\n\u003ctd\u003e0.8 mm (0.031\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e5.3 mm (0.209\")\u003c\/td\u003e\n\u003ctd\u003e10.0 mm (0.394\")\u003c\/td\u003e\n\u003ctd\u003e1.0 mm (0.039\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e6.4 mm (0.252\")\u003c\/td\u003e\n\u003ctd\u003e12.0 mm (0.472\")\u003c\/td\u003e\n\u003ctd\u003e1.6 mm (0.063\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM7\u003c\/td\u003e\n\u003ctd\u003e7.4 mm (0.291\")\u003c\/td\u003e\n\u003ctd\u003e14.0 mm (0.551\")\u003c\/td\u003e\n\u003ctd\u003e1.6 mm (0.063\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e8.4 mm (0.331\")\u003c\/td\u003e\n\u003ctd\u003e16.0 mm (0.630\")\u003c\/td\u003e\n\u003ctd\u003e1.6 mm (0.063\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e10.5 mm (0.413\")\u003c\/td\u003e\n\u003ctd\u003e20.0 mm (0.787\")\u003c\/td\u003e\n\u003ctd\u003e2.0 mm (0.079\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e13.0 mm (0.512\")\u003c\/td\u003e\n\u003ctd\u003e24.0 mm (0.945\")\u003c\/td\u003e\n\u003ctd\u003e2.5 mm (0.098\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM14\u003c\/td\u003e\n\u003ctd\u003e15.0 mm (0.591\")\u003c\/td\u003e\n\u003ctd\u003e28.0 mm (1.102\")\u003c\/td\u003e\n\u003ctd\u003e2.5 mm (0.098\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e17.0 mm (0.669\")\u003c\/td\u003e\n\u003ctd\u003e30.0 mm (1.181\")\u003c\/td\u003e\n\u003ctd\u003e3.0 mm (0.118\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM18\u003c\/td\u003e\n\u003ctd\u003e19.0 mm (0.748\")\u003c\/td\u003e\n\u003ctd\u003e34.0 mm (1.339\")\u003c\/td\u003e\n\u003ctd\u003e3.0 mm (0.118\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003ctd\u003e21.0 mm (0.827\")\u003c\/td\u003e\n\u003ctd\u003e37.0 mm (1.457\")\u003c\/td\u003e\n\u003ctd\u003e3.0 mm (0.118\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM22\u003c\/td\u003e\n\u003ctd\u003e23.0 mm (0.906\")\u003c\/td\u003e\n\u003ctd\u003e39.0 mm (1.535\")\u003c\/td\u003e\n\u003ctd\u003e3.0 mm (0.118\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM24\u003c\/td\u003e\n\u003ctd\u003e25.0 mm (0.984\")\u003c\/td\u003e\n\u003ctd\u003e44.0 mm (1.732\")\u003c\/td\u003e\n\u003ctd\u003e4.0 mm (0.157\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM27\u003c\/td\u003e\n\u003ctd\u003e28.0 mm (1.102\")\u003c\/td\u003e\n\u003ctd\u003e50.0 mm (1.969\")\u003c\/td\u003e\n\u003ctd\u003e4.0 mm (0.157\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM30\u003c\/td\u003e\n\u003ctd\u003e31.0 mm (1.220\")\u003c\/td\u003e\n\u003ctd\u003e56.0 mm (2.205\")\u003c\/td\u003e\n\u003ctd\u003e4.0 mm (0.157\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA4 (316) Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHardness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHV 140\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIN 125 Form A, similar to ISO 7089\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEdge Profile\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSquare edge, no chamfer (Form A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePlain, natural (unplated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM1.6, M2, M3, M4, M5, M6, M7, M8, M10, M12, M14, M16, M18, M20, M22, M24, M27, M30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine \u0026amp; coastal:\u003c\/strong\u003e boat fittings, deck hardware, pontoons, jetties and any assembly regularly exposed to salt spray or immersion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutdoor \u0026amp; infrastructure:\u003c\/strong\u003e railings, signage, fencing and structures exposed to de-icing salt or year-round weathering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial \u0026amp; chemical processing:\u003c\/strong\u003e plant and equipment exposed to washdown chemicals and process fluids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral engineering \u0026amp; DIY:\u003c\/strong\u003e anywhere a non-corroding, non-staining washer is preferred over standard zinc-plated steel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFitting \u0026amp; Installation Guidance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMatch the washer's thread size to the bolt, screw or stud diameter (e.g. an M8 bolt takes an M8 washer) – the bore is sized with clearance so the fastener passes through freely.\u003c\/li\u003e\n\u003cli\u003eFit the washer beneath the bolt head and\/or nut to spread the clamping load over a wider area, reducing surface damage and the risk of the fastener pulling through soft or brittle materials.\u003c\/li\u003e\n\u003cli\u003eForm A washers have no chamfer, so either face can be presented to the joint.\u003c\/li\u003e\n\u003cli\u003eWhere vibration is expected, pair with a suitable lock or spring washer in addition to this flat washer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich size do I need?\u003c\/strong\u003e\u003cbr\u003eMatch the washer to the bolt, screw or stud: an M8 bolt takes an M8 washer. The inside diameter, outside diameter and thickness of every size are in the table above.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich way up does it fit?\u003c\/strong\u003e\u003cbr\u003eEither way. Form A washers have no chamfer, so both faces sit flush against the joint.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat makes A4 (316) marine grade?\u003c\/strong\u003e\u003cbr\u003eA4 is a molybdenum-alloyed stainless steel. The molybdenum improves resistance to pitting and crevice corrosion caused by chlorides, such as salt spray and de-icing salt.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs there a coating that can wear off?\u003c\/strong\u003e\u003cbr\u003eNo. The washers are plain, natural stainless steel, so there is no plating to wear, flake or scratch through in service.\u003c\/p\u003e","brand":"DIYUK","offers":[{"title":"M1.6 \/ 1","offer_id":57280145424765,"sku":"DIN125-A4-M1.6-1","price":5.47,"currency_code":"GBP","in_stock":false},{"title":"M1.6 \/ 10","offer_id":57280145457533,"sku":"DIN125-A4-M1.6-10","price":5.85,"currency_code":"GBP","in_stock":false},{"title":"M1.6 \/ 100","offer_id":57280145490301,"sku":"DIN125-A4-M1.6-100","price":6.72,"currency_code":"GBP","in_stock":false},{"title":"M1.6 \/ 20","offer_id":57280145523069,"sku":"DIN125-A4-M1.6-20","price":5.97,"currency_code":"GBP","in_stock":false},{"title":"M1.6 \/ 200","offer_id":57280145555837,"sku":"DIN125-A4-M1.6-200","price":8.47,"currency_code":"GBP","in_stock":false},{"title":"M1.6 \/ 3","offer_id":57280145588605,"sku":"DIN125-A4-M1.6-3","price":5.85,"currency_code":"GBP","in_stock":false},{"title":"M1.6 \/ 50","offer_id":57280145621373,"sku":"DIN125-A4-M1.6-50","price":6.23,"currency_code":"GBP","in_stock":false},{"title":"M10 \/ 1","offer_id":57280145654141,"sku":"DIN125-A4-M10-1","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M10 \/ 10","offer_id":57280145686909,"sku":"DIN125-A4-M10-10","price":6.23,"currency_code":"GBP","in_stock":true},{"title":"M10 \/ 100","offer_id":57280145719677,"sku":"DIN125-A4-M10-100","price":10.85,"currency_code":"GBP","in_stock":true},{"title":"M10 \/ 20","offer_id":57280145752445,"sku":"DIN125-A4-M10-20","price":6.6,"currency_code":"GBP","in_stock":true},{"title":"M10 \/ 200","offer_id":57280145785213,"sku":"DIN125-A4-M10-200","price":15.97,"currency_code":"GBP","in_stock":true},{"title":"M10 \/ 3","offer_id":57280145817981,"sku":"DIN125-A4-M10-3","price":5.97,"currency_code":"GBP","in_stock":true},{"title":"M10 \/ 50","offer_id":57280145850749,"sku":"DIN125-A4-M10-50","price":8.72,"currency_code":"GBP","in_stock":true},{"title":"M12 \/ 1","offer_id":57280145883517,"sku":"DIN125-A4-M12-1","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M12 \/ 10","offer_id":57280145916285,"sku":"DIN125-A4-M12-10","price":6.47,"currency_code":"GBP","in_stock":false},{"title":"M12 \/ 100","offer_id":57280145949053,"sku":"DIN125-A4-M12-100","price":13.1,"currency_code":"GBP","in_stock":false},{"title":"M12 \/ 20","offer_id":57280145981821,"sku":"DIN125-A4-M12-20","price":7.97,"currency_code":"GBP","in_stock":false},{"title":"M12 \/ 200","offer_id":57280146014589,"sku":"DIN125-A4-M12-200","price":22.22,"currency_code":"GBP","in_stock":false},{"title":"M12 \/ 3","offer_id":57280146047357,"sku":"DIN125-A4-M12-3","price":5.97,"currency_code":"GBP","in_stock":true},{"title":"M12 \/ 50","offer_id":57280146080125,"sku":"DIN125-A4-M12-50","price":9.85,"currency_code":"GBP","in_stock":false},{"title":"M14 \/ 1","offer_id":57280146112893,"sku":"DIN125-A4-M14-1","price":5.6,"currency_code":"GBP","in_stock":true},{"title":"M14 \/ 10","offer_id":57280146145661,"sku":"DIN125-A4-M14-10","price":6.72,"currency_code":"GBP","in_stock":true},{"title":"M14 \/ 100","offer_id":57280146178429,"sku":"DIN125-A4-M14-100","price":18.72,"currency_code":"GBP","in_stock":true},{"title":"M14 \/ 20","offer_id":57280146211197,"sku":"DIN125-A4-M14-20","price":8.6,"currency_code":"GBP","in_stock":true},{"title":"M14 \/ 200","offer_id":57280146243965,"sku":"DIN125-A4-M14-200","price":27.97,"currency_code":"GBP","in_stock":false},{"title":"M14 \/ 3","offer_id":57280146276733,"sku":"DIN125-A4-M14-3","price":6.1,"currency_code":"GBP","in_stock":true},{"title":"M14 \/ 50","offer_id":57280146309501,"sku":"DIN125-A4-M14-50","price":11.22,"currency_code":"GBP","in_stock":true},{"title":"M16 \/ 1","offer_id":57280146342269,"sku":"DIN125-A4-M16-1","price":5.6,"currency_code":"GBP","in_stock":true},{"title":"M16 \/ 10","offer_id":57280146375037,"sku":"DIN125-A4-M16-10","price":7.85,"currency_code":"GBP","in_stock":false},{"title":"M16 \/ 100","offer_id":57280146407805,"sku":"DIN125-A4-M16-100","price":20.6,"currency_code":"GBP","in_stock":false},{"title":"M16 \/ 20","offer_id":57280146440573,"sku":"DIN125-A4-M16-20","price":8.97,"currency_code":"GBP","in_stock":false},{"title":"M16 \/ 200","offer_id":57280146473341,"sku":"DIN125-A4-M16-200","price":31.47,"currency_code":"GBP","in_stock":false},{"title":"M16 \/ 3","offer_id":57280146506109,"sku":"DIN125-A4-M16-3","price":6.1,"currency_code":"GBP","in_stock":true},{"title":"M16 \/ 50","offer_id":57280146538877,"sku":"DIN125-A4-M16-50","price":12.22,"currency_code":"GBP","in_stock":false},{"title":"M18 \/ 1","offer_id":57280146571645,"sku":"DIN125-A4-M18-1","price":5.6,"currency_code":"GBP","in_stock":false},{"title":"M18 \/ 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Under the flange, a ring of angled serrations bites into the surface being clamped as the nut is tightened, giving the joint genuine mechanical resistance to loosening under vibration and repeated movement, rather than relying on thread friction alone.\u003c\/p\u003e\n\u003cp\u003eManufactured from A2 (18-8) stainless steel to property class A2-70, these nuts offer good general-purpose corrosion resistance for indoor, outdoor, and damp environments.\u003c\/p\u003e\n\u003cp\u003eThe integral flange effectively builds a flat washer into the nut itself: it spreads the clamping load over a wider bearing area than the nut face alone, protecting the fixed surface and allowing the nut to span slightly oversized or irregular holes.\u003c\/p\u003e\n\u003cp\u003eCompared with fitting a standard hex nut alongside a separate spring or lock washer, this one-piece design combines both jobs in a single fastener: the flange takes on the load-spreading role of a washer, and the serrations provide the locking action normally expected from a spring washer, without a second loose component to source, align, or lose during assembly. That also removes a step from the fitting process, since there is only one part to place and tighten rather than a nut and washer that need to be kept together and orientated correctly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSerrated hexagon flange nut manufactured to DIN 6923, cross-referenced to ISO 4161\u003c\/li\u003e\n\u003cli\u003eIntegral flange takes the place of a separate flat washer, spreading the clamping load over a wider bearing area\u003c\/li\u003e\n\u003cli\u003eAngled under-flange serrations bite into the clamped surface for genuine mechanical self-locking under vibration, not just thread friction\u003c\/li\u003e\n\u003cli\u003eA2 (18-8) stainless steel to property class A2-70 for reliable corrosion resistance indoor, outdoor, and in damp conditions\u003c\/li\u003e\n\u003cli\u003eStandard DIN 13 metric coarse thread pitch, compatible with ordinary metric bolts, screws, and threaded rod\u003c\/li\u003e\n\u003cli\u003eWide flange lets the nut span slightly oversized or irregular clearance holes without the joint working loose\u003c\/li\u003e\n\u003cli\u003eSix sizes from M4 to M12, each matched to a specific spanner or socket width across flats\u003c\/li\u003e\n\u003cli\u003eOne-piece design – no separate washer to source, align, or lose during assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eThread size\u003c\/th\u003e\n\u003cth\u003eThread pitch\u003c\/th\u003e\n\u003cth\u003eWidth across flats\u003c\/th\u003e\n\u003cth\u003eFlange diameter\u003c\/th\u003e\n\u003cth\u003eNut height\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e0.7mm (0.03in)\u003c\/td\u003e\n\u003ctd\u003e7mm (0.28in)\u003c\/td\u003e\n\u003ctd\u003e10mm (0.39in)\u003c\/td\u003e\n\u003ctd\u003e4.65mm (0.18in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e0.8mm (0.03in)\u003c\/td\u003e\n\u003ctd\u003e8mm (0.31in)\u003c\/td\u003e\n\u003ctd\u003e11.8mm (0.46in)\u003c\/td\u003e\n\u003ctd\u003e5mm (0.20in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e1.0mm (0.04in)\u003c\/td\u003e\n\u003ctd\u003e10mm (0.39in)\u003c\/td\u003e\n\u003ctd\u003e14.2mm (0.56in)\u003c\/td\u003e\n\u003ctd\u003e6mm (0.24in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e1.25mm (0.05in)\u003c\/td\u003e\n\u003ctd\u003e13mm (0.51in)\u003c\/td\u003e\n\u003ctd\u003e17.9mm (0.70in)\u003c\/td\u003e\n\u003ctd\u003e8mm (0.31in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e1.5mm (0.06in)\u003c\/td\u003e\n\u003ctd\u003e15mm (0.59in)\u003c\/td\u003e\n\u003ctd\u003e21.8mm (0.86in)\u003c\/td\u003e\n\u003ctd\u003e10mm (0.39in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e1.75mm (0.07in)\u003c\/td\u003e\n\u003ctd\u003e18mm (0.71in)\u003c\/td\u003e\n\u003ctd\u003e26mm (1.02in)\u003c\/td\u003e\n\u003ctd\u003e12mm (0.47in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Guidance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSelect the nut size to match the bolt, screw, or threaded rod being used – all sizes share the DIN 13 metric coarse thread pitch given in the specification table above. Fit the nut with the serrated face of the flange against the material being clamped, and tighten with a spanner or socket of the width-across-flats size listed for that size.\u003c\/p\u003e\n\u003cp\u003eA2 stainless is intended for general indoor, outdoor, and damp conditions. Because the locking action is mechanical rather than relying on a thread-locking compound, these nuts can be removed and re-fitted with a spanner or socket in the usual way.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe combination of vibration-resistant locking, A2 corrosion resistance, and a load-spreading flange makes these nuts a good fit anywhere a plain hex nut risks working loose or a separate washer would otherwise be needed:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAutomotive and motorsport assembly, including exhausts, engine mounts, and suspension components subject to constant vibration\u003c\/li\u003e\n\u003cli\u003eMachinery guards, motor mounts, and general industrial equipment subject to repeated movement or running vibration\u003c\/li\u003e\n\u003cli\u003eOutdoor construction, steel fabrication, decking frames, and garden structures, where the A2 stainless build resists the damp and weather that would corrode a plain steel nut\u003c\/li\u003e\n\u003cli\u003ePanel and sheet-metal assemblies, where the wide flange spreads the clamping load and helps the nut sit securely over a slightly oversized or irregular hole\u003c\/li\u003e\n\u003cli\u003eGeneral repairs and maintenance on any bolted joint with a history of working loose over time\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOrder before 2pm Mon–Fri for same-day dispatch from our UK warehouse.\u003c\/p\u003e","brand":"DIYUK","offers":[{"title":"M4 \/ 2","offer_id":57279098847613,"sku":"DIN6923-M4-2","price":5.6,"currency_code":"GBP","in_stock":true},{"title":"M4 \/ 10","offer_id":57279098782077,"sku":"DIN6923-M4-10","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M4 \/ 50","offer_id":57279098880381,"sku":"DIN6923-M4-50","price":8.97,"currency_code":"GBP","in_stock":true},{"title":"M4 \/ 100","offer_id":57279098814845,"sku":"DIN6923-M4-100","price":11.1,"currency_code":"GBP","in_stock":true},{"title":"M5 \/ 2","offer_id":57279098978685,"sku":"DIN6923-M5-2","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M5 \/ 10","offer_id":57279098913149,"sku":"DIN6923-M5-10","price":6.23,"currency_code":"GBP","in_stock":true},{"title":"M5 \/ 50","offer_id":57279099011453,"sku":"DIN6923-M5-50","price":8.97,"currency_code":"GBP","in_stock":true},{"title":"M5 \/ 100","offer_id":57279098945917,"sku":"DIN6923-M5-100","price":11.1,"currency_code":"GBP","in_stock":true},{"title":"M6 \/ 2","offer_id":57279099109757,"sku":"DIN6923-M6-2","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M6 \/ 10","offer_id":57279099044221,"sku":"DIN6923-M6-10","price":6.23,"currency_code":"GBP","in_stock":false},{"title":"M6 \/ 50","offer_id":57279099142525,"sku":"DIN6923-M6-50","price":8.97,"currency_code":"GBP","in_stock":false},{"title":"M6 \/ 100","offer_id":57279099076989,"sku":"DIN6923-M6-100","price":11.1,"currency_code":"GBP","in_stock":false},{"title":"M8 \/ 2","offer_id":57279099240829,"sku":"DIN6923-M8-2","price":5.97,"currency_code":"GBP","in_stock":false},{"title":"M8 \/ 10","offer_id":57279099175293,"sku":"DIN6923-M8-10","price":6.47,"currency_code":"GBP","in_stock":false},{"title":"M8 \/ 50","offer_id":57279099273597,"sku":"DIN6923-M8-50","price":9.97,"currency_code":"GBP","in_stock":false},{"title":"M8 \/ 100","offer_id":57279099208061,"sku":"DIN6923-M8-100","price":13.22,"currency_code":"GBP","in_stock":false},{"title":"M10 \/ 2","offer_id":57279098585469,"sku":"DIN6923-M10-2","price":5.97,"currency_code":"GBP","in_stock":true},{"title":"M10 \/ 10","offer_id":57279098519933,"sku":"DIN6923-M10-10","price":7.85,"currency_code":"GBP","in_stock":true},{"title":"M10 \/ 50","offer_id":57279098618237,"sku":"DIN6923-M10-50","price":12.22,"currency_code":"GBP","in_stock":true},{"title":"M10 \/ 100","offer_id":57279098552701,"sku":"DIN6923-M10-100","price":20.6,"currency_code":"GBP","in_stock":true},{"title":"M12 \/ 2","offer_id":57279098716541,"sku":"DIN6923-M12-2","price":6.1,"currency_code":"GBP","in_stock":false},{"title":"M12 \/ 10","offer_id":57279098651005,"sku":"DIN6923-M12-10","price":8.22,"currency_code":"GBP","in_stock":false},{"title":"M12 \/ 50","offer_id":57279098749309,"sku":"DIN6923-M12-50","price":17.22,"currency_code":"GBP","in_stock":false},{"title":"M12 \/ 100","offer_id":57279098683773,"sku":"DIN6923-M12-100","price":24.85,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/0245\/6454\/files\/din6923main.png?v=1761681407"},{"product_id":"heavy-duty-penny-washers-din-9021-bzp-steel","title":"DIYUK Large Flat Metal Penny Washers, DIN 9021 \/ ISO 7093, White Zinc Plated Steel, M4 M5 M6 M8 M10 M12 to M30, Packs of 2-200","description":"\u003cp\u003e\u003cstrong\u003ePenny washers to DIN 9021 \/ ISO 7093 in white zinc-plated steel, with an extra-large outer diameter that spreads the load of a screw or bolt.\u003c\/strong\u003e Also known as fender washers, mudguard washers or repair washers, these large flat metal washers help stop a fixing digging into, cracking or pulling through soft, thin or worn material, from timber and plasterboard to sheet metal panels. Twelve sizes from M4 to M30, in packs of 2 to 200.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow It Works\u003c\/strong\u003e\u003cbr\u003e\nThe enlarged contact surface spreads the clamping load evenly and reduces the pressure on the fixing and on the material beneath it. For the same bolt size, a penny washer covers a much wider area than a standard flat washer, so the head of a screw or bolt (or the nut) bears on a broad, flat face. The same wide face bridges oversized, worn or damaged fixing holes, and helps limit damage from friction and vibration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExtra-large outer diameter: spreads the clamping load over a much wider area than a standard flat washer, reducing the risk of the fixing head crushing, cracking or pulling through the material beneath\u003c\/li\u003e\n\u003cli\u003eMade to DIN 9021 \/ ISO 7093 dimensions for a consistent, repeatable fit, size after size\u003c\/li\u003e\n\u003cli\u003eWhite zinc plated steel: a sacrificial, protective zinc coating gives everyday corrosion resistance against moisture and oxidation, for indoor and outdoor general-purpose use\u003c\/li\u003e\n\u003cli\u003eCovers worn or oversized holes: the wide face bridges a gap that a standard washer would no longer cover\u003c\/li\u003e\n\u003cli\u003e12 sizes from M4 to M30, so the right washer is on hand from light joinery to structural and automotive work\u003c\/li\u003e\n\u003cli\u003eImperial equivalents included: every metric dimension in the table below is shown with its inch equivalent for quick reference\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eEnlarged round washer (penny washer) with a large outer diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eDIN 9021 \/ ISO 7093\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eWhite zinc plated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSizes\u003c\/td\u003e\n\u003ctd\u003e12 sizes from M4 to M30; see table below\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack sizes\u003c\/td\u003e\n\u003ctd\u003e2, 10, 25, 50, 100 or 200 washers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eAvailable Sizes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe table below lists the nominal dimensions for every size we hold in stock. Metric figures are shown first, with the imperial equivalent in brackets.\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eSuits Bolt\/Screw Ø\u003c\/th\u003e\n\u003cth\u003eInner Ø (d1)\u003c\/th\u003e\n\u003cth\u003eOuter Ø (d2)\u003c\/th\u003e\n\u003cth\u003eThickness (h)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e4mm (0.16in)\u003c\/td\u003e\n\u003ctd\u003e4.3mm (0.17in)\u003c\/td\u003e\n\u003ctd\u003e12mm (0.47in)\u003c\/td\u003e\n\u003ctd\u003e1.2mm (0.05in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e5mm (0.20in)\u003c\/td\u003e\n\u003ctd\u003e5.3mm (0.21in)\u003c\/td\u003e\n\u003ctd\u003e15mm (0.59in)\u003c\/td\u003e\n\u003ctd\u003e1.2mm (0.05in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e6mm (0.24in)\u003c\/td\u003e\n\u003ctd\u003e6.4mm (0.25in)\u003c\/td\u003e\n\u003ctd\u003e18mm (0.71in)\u003c\/td\u003e\n\u003ctd\u003e1.5-1.6mm (0.06in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e8mm (0.31in)\u003c\/td\u003e\n\u003ctd\u003e8.4mm (0.33in)\u003c\/td\u003e\n\u003ctd\u003e24mm (0.94in)\u003c\/td\u003e\n\u003ctd\u003e2.0mm (0.08in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e10mm (0.39in)\u003c\/td\u003e\n\u003ctd\u003e10.5mm (0.41in)\u003c\/td\u003e\n\u003ctd\u003e30mm (1.18in)\u003c\/td\u003e\n\u003ctd\u003e2.5mm (0.10in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e12mm (0.47in)\u003c\/td\u003e\n\u003ctd\u003e13.0mm (0.51in)\u003c\/td\u003e\n\u003ctd\u003e37mm (1.46in)\u003c\/td\u003e\n\u003ctd\u003e3.0mm (0.12in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM14\u003c\/td\u003e\n\u003ctd\u003e14mm (0.55in)\u003c\/td\u003e\n\u003ctd\u003e15.0mm (0.59in)\u003c\/td\u003e\n\u003ctd\u003e44mm (1.73in)\u003c\/td\u003e\n\u003ctd\u003e3.0mm (0.12in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e16mm (0.63in)\u003c\/td\u003e\n\u003ctd\u003e17.0mm (0.67in)\u003c\/td\u003e\n\u003ctd\u003e50mm (1.97in)\u003c\/td\u003e\n\u003ctd\u003e3.0mm (0.12in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM18\u003c\/td\u003e\n\u003ctd\u003e18mm (0.71in)\u003c\/td\u003e\n\u003ctd\u003e19.0mm (0.75in)\u003c\/td\u003e\n\u003ctd\u003e56mm (2.20in)\u003c\/td\u003e\n\u003ctd\u003e4.0mm (0.16in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003ctd\u003e20mm (0.79in)\u003c\/td\u003e\n\u003ctd\u003e22.0mm (0.87in)\u003c\/td\u003e\n\u003ctd\u003e60mm (2.36in)\u003c\/td\u003e\n\u003ctd\u003e4.0mm (0.16in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM24\u003c\/td\u003e\n\u003ctd\u003e24mm (0.94in)\u003c\/td\u003e\n\u003ctd\u003e25.0mm (0.98in)\u003c\/td\u003e\n\u003ctd\u003e72mm (2.83in)\u003c\/td\u003e\n\u003ctd\u003e5.0mm (0.20in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM30\u003c\/td\u003e\n\u003ctd\u003e30mm (1.18in)\u003c\/td\u003e\n\u003ctd\u003e31.0mm (1.22in)\u003c\/td\u003e\n\u003ctd\u003e92mm (3.62in)\u003c\/td\u003e\n\u003ctd\u003e6.0mm (0.24in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eSizes at a glance: the M6 flat washer is 18mm across and 1.5-1.6mm thick; M8 penny washers (M8 washers for 8mm bolts and screws) are 24mm across with an 8.4mm hole and 2mm thick; the M10 washer suits a 10mm bolt, with a 10.5mm hole and a 30mm outer diameter; and the largest metal washers, M24 and M30, are 72mm and 92mm across, 5mm and 6mm thick.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe large bearing surface and wide size range make these washers useful wherever a standard flat washer would be too small to spread the load of a fixing:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWoodworking and carpentry:\u003c\/strong\u003e decking, fencing and timber-frame construction, where the wide bearing face helps stop a screw or bolt head sinking into or splitting softwood, plus general joinery where the load needs spreading across a wider area of timber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomotive and bodywork:\u003c\/strong\u003e body panels, wings (fenders), bumpers and interior trim, where thin sheet metal benefits from the extra bearing area to stop a fixing pulling through\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIY and home repair:\u003c\/strong\u003e flat-pack furniture, shelf and bracket mounting, and covering oversized, worn or damaged fixing holes that a standard washer can no longer bridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlumbing and electrical:\u003c\/strong\u003e securing fixtures and fittings where a wider load-bearing footprint protects the surrounding material\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlasterboard and soft sheet materials:\u003c\/strong\u003e the extra-large diameter helps prevent the fixing head crushing through, for a cleaner, more secure finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral construction:\u003c\/strong\u003e any assembly that needs even load distribution and protection of the fixing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChoosing the Size\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the fixing: an M8 washer suits an M8 bolt or screw (see the table above).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich size do I need?\u003c\/strong\u003e\u003cbr\u003eMatch the M size to your bolt or screw: an M8 washer suits an M8 (8mm) bolt or screw, an M10 washer an M10 (10mm) one, and so on up to M30. So washers for M8 bolts are the M8 size, and 4mm flat washers are the M4 size, 12mm across.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow are penny washers different from standard flat washers?\u003c\/strong\u003e\u003cbr\u003eFor the same bolt size, penny washers have a much larger outer diameter, so they spread the load over a wider area and help stop the fixing pulling through.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat else are they called?\u003c\/strong\u003e\u003cbr\u003eFender washers, mudguard washers, repair washers, large flat washers, large metal washers or simply large washers: wide washers for bolts and screws.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow thick are they?\u003c\/strong\u003e\u003cbr\u003eFrom 1.2mm (M4 and M5) to 6mm (M30); the M6 is 1.5-1.6mm and the M8 is 2mm. In the larger sizes, thick M20 washers are 4mm, M24 thick washers 5mm and an M30 washer 6mm. Every size is listed in the table above.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat pack sizes are available?\u003c\/strong\u003e\u003cbr\u003eEvery size comes in packs of 2, 10, 25, 50, 100 or 200 washers.\u003c\/p\u003e\n","brand":"DIYUK","offers":[{"title":"M4 - 4mm \/ 2","offer_id":40536268636294,"sku":"DIN9021-ZINC-M4-2","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M4 - 4mm \/ 10","offer_id":40536265949318,"sku":"DIN9021-ZINC-M4-10","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M4 - 4mm \/ 25","offer_id":40536265982086,"sku":"DIN9021-ZINC-M4-25","price":6.1,"currency_code":"GBP","in_stock":true},{"title":"M4 - 4mm \/ 50","offer_id":40536266014854,"sku":"DIN9021-ZINC-M4-50","price":6.23,"currency_code":"GBP","in_stock":true},{"title":"M4 - 4mm \/ 100","offer_id":40536266047622,"sku":"DIN9021-ZINC-M4-100","price":7.72,"currency_code":"GBP","in_stock":true},{"title":"M4 - 4mm \/ 200","offer_id":40536266080390,"sku":"DIN9021-ZINC-M4-200","price":8.72,"currency_code":"GBP","in_stock":true},{"title":"M5 - 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Their defining feature is a smooth, fully rounded cap that closes over the end of a bolt or threaded rod, completely enclosing the exposed thread rather than leaving it open the way a standard hex nut does.\u003c\/p\u003e\n\u003cp\u003eMade from A2 austenitic stainless steel, they combine the everyday convenience of a standard hexagon nut, fitted and removed with a normal spanner or socket, with strong resistance to rust and general corrosion. That makes them a reliable choice for fittings exposed to the weather, as A2 stainless steel remains rust-resistant even with frequent exposure to the elements. Because the dome fully covers the thread, it also keeps out dust, moisture and knocks that would otherwise mark or damage an open thread end, while giving the fixing a neat, rounded, professional appearance wherever it is visible.\u003c\/p\u003e\n\u003cp\u003eBecause the domed top hides the sharp, exposed end of the bolt, these nuts suit any visible fixing where a bare thread end would otherwise catch on a hand, sleeve or passing object. The standard hexagon base means they are just as easy to fit as an ordinary hex nut: no dome-specific spanner, socket or fitting technique is needed, just the correct size matched from the table below.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured to the DIN 1587 standard in sizes M4 to M16, with M3 as an additional size in the same domed shape\u003c\/li\u003e\n\u003cli\u003eA2 austenitic stainless steel construction gives strong resistance to rust and general corrosion\u003c\/li\u003e\n\u003cli\u003eSmooth, fully rounded dome cap completely encloses the exposed end of the bolt or threaded rod, protecting the thread from damage\u003c\/li\u003e\n\u003cli\u003eSnag-free, rounded profile removes the sharp exposed thread end left by a standard nut, safer for hands, clothing and anyone brushing past\u003c\/li\u003e\n\u003cli\u003eClosed dome shields the thread from dust, moisture and knocks, on top of the general corrosion resistance of the A2 stainless steel itself\u003c\/li\u003e\n\u003cli\u003eStandard hexagon base takes a normal spanner or socket, so fitting and removal need no specialist tools\u003c\/li\u003e\n\u003cli\u003eClean, rounded finish suited to visible fixings where appearance matters as much as function\u003c\/li\u003e\n\u003cli\u003eNine sizes from M3 up to M16, with width across flats, nut height and dome diameter listed for every size, covering small fixings through to heavier threaded rod\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe table below gives the width across flats (the spanner or socket size), overall nut height and dome diameter for every size in the range, and the DIN 1587 thread pitch for M4 to M16, with imperial equivalents shown alongside each metric measurement.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eThread size\u003c\/th\u003e\n\u003cth\u003eThread pitch\u003c\/th\u003e\n\u003cth\u003eWidth across flats\u003c\/th\u003e\n\u003cth\u003eNut height\u003c\/th\u003e\n\u003cth\u003eDome diameter\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e5.5mm (0.22in)\u003c\/td\u003e\n\u003ctd\u003e6.0mm (0.24in)\u003c\/td\u003e\n\u003ctd\u003e5.8mm (0.23in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e0.7mm (0.03in)\u003c\/td\u003e\n\u003ctd\u003e7.0mm (0.28in)\u003c\/td\u003e\n\u003ctd\u003e8.0mm (0.31in)\u003c\/td\u003e\n\u003ctd\u003e6.5mm (0.26in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e0.8mm (0.03in)\u003c\/td\u003e\n\u003ctd\u003e8.0mm (0.31in)\u003c\/td\u003e\n\u003ctd\u003e10.0mm (0.39in)\u003c\/td\u003e\n\u003ctd\u003e7.5mm (0.30in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e1.0mm (0.04in)\u003c\/td\u003e\n\u003ctd\u003e10.0mm (0.39in)\u003c\/td\u003e\n\u003ctd\u003e12.0mm (0.47in)\u003c\/td\u003e\n\u003ctd\u003e9.5mm (0.37in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e1.25mm (0.05in)\u003c\/td\u003e\n\u003ctd\u003e13.0mm (0.51in)\u003c\/td\u003e\n\u003ctd\u003e15.0mm (0.59in)\u003c\/td\u003e\n\u003ctd\u003e12.5mm (0.49in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e1.5mm (0.06in)\u003c\/td\u003e\n\u003ctd\u003e17.0mm (0.67in)\u003c\/td\u003e\n\u003ctd\u003e18.0mm (0.71in)\u003c\/td\u003e\n\u003ctd\u003e16.0mm (0.63in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e1.75mm (0.07in)\u003c\/td\u003e\n\u003ctd\u003e19.0mm (0.75in)\u003c\/td\u003e\n\u003ctd\u003e22.0mm (0.87in)\u003c\/td\u003e\n\u003ctd\u003e18.0mm (0.71in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM14\u003c\/td\u003e\n\u003ctd\u003e2.0mm (0.08in)\u003c\/td\u003e\n\u003ctd\u003e22.0mm (0.87in)\u003c\/td\u003e\n\u003ctd\u003e25.0mm (0.98in)\u003c\/td\u003e\n\u003ctd\u003e20.0mm (0.79in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e2.0mm (0.08in)\u003c\/td\u003e\n\u003ctd\u003e24.0mm (0.94in)\u003c\/td\u003e\n\u003ctd\u003e28.0mm (1.10in)\u003c\/td\u003e\n\u003ctd\u003e23.0mm (0.91in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe combination of a corrosion-resistant A2 stainless build and a smooth, snag-free dome makes these nuts useful wherever a fixing needs to look tidy and feel smooth, not just hold securely. Common uses include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFurniture making and restoration, where a neat, rounded finish is preferred to an exposed nut and washer\u003c\/li\u003e\n\u003cli\u003eShopfitting and cabinetry, on visible fixings that need to look as good as they perform\u003c\/li\u003e\n\u003cli\u003eAutomotive and motorcycle trim, including wheel trims (hubcaps) on cars and vans, plus bicycles and other vehicles where appearance matters, with a corrosion-resistant finish that suits fixing points exposed to the weather\u003c\/li\u003e\n\u003cli\u003eBalustrades, handrails and staircases, where the rounded dome covers the sharp thread end that would otherwise catch hands or clothing\u003c\/li\u003e\n\u003cli\u003ePlayground and outdoor play equipment, for a snag-free, rounded finish on exposed fixings\u003c\/li\u003e\n\u003cli\u003eGarden structures and fencing, where A2 stainless copes well with damp conditions and outdoor weathering\u003c\/li\u003e\n\u003cli\u003eCovering exposed threaded studs on machinery guards and control panels, protecting both the thread and anyone working nearby\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBecause the range spans M3 up to M16, it covers everything from fine, precision fixings on small assemblies through to heavier threaded rod on structural or outdoor work, all finished with the same corrosion-resistant, snag-free dome.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Guidance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChoose the dome nut that matches the diameter of your bolt or threaded rod (for example, an M8 dome nut for M8 threaded bar) using the thread size column in the table above. Before fitting, make sure the exposed end of your fixing will sit fully inside the dome; if the thread protrudes too far, either trim the rod back before fitting the dome nut or use a shorter bolt so the full thread sits inside the cap. Tighten with a standard spanner or socket sized to the width across flats given in the table, the same tool you would use on an equivalent standard hex nut, so no specialist equipment is needed. Matching the correct tool size to the width across flats, rather than using one that is slightly too large, also helps avoid rounding the corners of the nut when tightening.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is a dome nut?\u003c\/strong\u003e\u003cbr\u003eA dome nut, also called an acorn nut or cap nut, is a hexagon nut with a closed, rounded top. It screws onto the end of a bolt or threaded rod and covers the exposed thread end for a neat, snag-free finish.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat sizes are available?\u003c\/strong\u003e\u003cbr\u003eNine sizes: M3, M4, M5, M6, M8, M10, M12, M14 and M16. M4 to M16 are made to DIN 1587; M3 is an additional size in the same domed shape.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat size spanner do I need?\u003c\/strong\u003e\u003cbr\u003eMeasured across the flats: 5.5mm for M3, 7mm for M4, 8mm for M5, 10mm for M6, 13mm for M8, 17mm for M10, 19mm for M12, 22mm for M14 and 24mm for M16.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich dome nut fits my bolt?\u003c\/strong\u003e\u003cbr\u003eMatch the thread size: an M8 bolt or threaded rod needs an M8 dome nut, an M10 bolt an M10 dome nut, and so on.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre they rust-resistant?\u003c\/strong\u003e\u003cbr\u003eYes. They are made from A2 stainless steel, which remains rust-resistant even with frequent exposure to the elements.\u003c\/p\u003e","brand":"DIYUK","offers":[{"title":"M3 \/ 2","offer_id":57278844699005,"sku":"DIN1587-M03-02","price":5.6,"currency_code":"GBP","in_stock":true},{"title":"M3 \/ 5","offer_id":57278844731773,"sku":"DIN1587-M03-05","price":5.72,"currency_code":"GBP","in_stock":true},{"title":"M3 \/ 10","offer_id":57278844764541,"sku":"DIN1587-M03-10","price":6.23,"currency_code":"GBP","in_stock":true},{"title":"M3 \/ 20","offer_id":57278844797309,"sku":"DIN1587-M03-20","price":6.72,"currency_code":"GBP","in_stock":true},{"title":"M3 \/ 50","offer_id":57278844830077,"sku":"DIN1587-M03-50","price":7.97,"currency_code":"GBP","in_stock":true},{"title":"M4 \/ 2","offer_id":57278844862845,"sku":"DIN1587-M04-02","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M4 \/ 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pull straight through - or simply crush - a soft or thin surface, the penny washer's wide face distributes the same clamping force across a much larger footprint. That makes it the natural choice for fixing into timber, plastic, sheet metal, rubber and composite materials, and for bridging fixing holes that have become oversized, elongated or slightly irregular through wear, rust or a previous repair. It's also useful wherever the fixing hole is oversized or slightly irregular, since the wide washer bridges the gap reliably.\u003c\/p\u003e\n\u003cp\u003eManufactured in A2 stainless steel (equivalent to 18-8), these washers offer long-lasting corrosion resistance, even in harsh weather conditions, making them suitable for outdoor exposure and general engineering use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured to DIN 9021 (Form G), dimensionally equivalent to the current ISO 7093 standard\u003c\/li\u003e\n\u003cli\u003eA2 stainless steel (18-8 equivalent) for strong, long-lasting general corrosion resistance\u003c\/li\u003e\n\u003cli\u003eOuter diameter roughly three times the nominal thread size, for maximum load-spreading compared with a standard flat washer\u003c\/li\u003e\n\u003cli\u003eNine thread sizes covering the full M2 to M16 range, from small precision fixings up to heavy-duty bolts\u003c\/li\u003e\n\u003cli\u003eWide, flat bearing face suited to soft, thin or easily-damaged materials - timber, plastic, sheet metal, rubber and composites\u003c\/li\u003e\n\u003cli\u003eBridges oversized, elongated or slightly irregular fixing holes that a standard washer would not fully cover\u003c\/li\u003e\n\u003cli\u003eConsistent proportions across the size range, so the same wide-bearing benefit applies whether you're working with M2, M16 or M8 penny washers\u003c\/li\u003e\n\u003cli\u003eAlso known as a mudguard washer, widely used for automotive and vehicle bodywork repair\u003c\/li\u003e\n\u003cli\u003eEasy to fit, speeding up construction and repair work\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaterial: A2 stainless steel (equivalent to 18-8)\u003c\/li\u003e\n\u003cli\u003eStandard: DIN 9021 (Form G), dimensionally equivalent to ISO 7093\u003c\/li\u003e\n\u003cli\u003eDesign: Large outer diameter (~3× nominal bolt size) for wide load distribution\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSizes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe table below lists the inner diameter (d1), outer diameter (d2) and thickness (h) for each thread size, with the outer diameter also given in inches for quick reference against imperial fixings.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eThread size\u003c\/th\u003e\n\u003cth\u003eInner dia. (d1)\u003c\/th\u003e\n\u003cth\u003eOuter dia. (d2)\u003c\/th\u003e\n\u003cth\u003eOuter dia. (inches)\u003c\/th\u003e\n\u003cth\u003eThickness (h)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eM2\u003c\/td\u003e\n\u003ctd\u003e2.2mm\u003c\/td\u003e\n\u003ctd\u003e6mm\u003c\/td\u003e\n\u003ctd\u003e0.24″\u003c\/td\u003e\n\u003ctd\u003e0.8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003e3.2mm\u003c\/td\u003e\n\u003ctd\u003e9mm\u003c\/td\u003e\n\u003ctd\u003e0.35″\u003c\/td\u003e\n\u003ctd\u003e0.8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e4.3mm\u003c\/td\u003e\n\u003ctd\u003e12mm\u003c\/td\u003e\n\u003ctd\u003e0.47″\u003c\/td\u003e\n\u003ctd\u003e1.0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e5.3mm\u003c\/td\u003e\n\u003ctd\u003e15mm\u003c\/td\u003e\n\u003ctd\u003e0.59″\u003c\/td\u003e\n\u003ctd\u003e1.2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e8.4mm\u003c\/td\u003e\n\u003ctd\u003e24mm\u003c\/td\u003e\n\u003ctd\u003e0.94″\u003c\/td\u003e\n\u003ctd\u003e2.0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e10.5mm\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003ctd\u003e1.18″\u003c\/td\u003e\n\u003ctd\u003e2.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e13mm\u003c\/td\u003e\n\u003ctd\u003e37mm\u003c\/td\u003e\n\u003ctd\u003e1.46″\u003c\/td\u003e\n\u003ctd\u003e3.0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM14\u003c\/td\u003e\n\u003ctd\u003e15mm\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003ctd\u003e1.73″\u003c\/td\u003e\n\u003ctd\u003e3.0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e17mm\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003ctd\u003e1.97″\u003c\/td\u003e\n\u003ctd\u003e3.0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePenny washers earn their \"mudguard washer\" nickname from vehicle bodywork repair, where they're used to repair rusted, enlarged or elongated fixing holes on mudguards, wings and other bodywork panels on cars, trailers and agricultural machinery - the wide face bridges the damaged area cleanly instead of trying to fix a fresh, smaller washer over a hole it can't fully cover. The same load-spreading principle carries over into general fixing work:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFixing into timber, plastic, sheet metal, rubber or composite panels, where a standard washer would risk pulling through or crushing the surface under load\u003c\/li\u003e\n\u003cli\u003eCovering oversized, worn or slightly irregular fixing holes left by a previous repair, corrosion, or an incorrectly sized pilot hole\u003c\/li\u003e\n\u003cli\u003eGeneral engineering, construction, industry, woodworking and maintenance assembly work requiring a wide-bearing, corrosion-resistant washer\u003c\/li\u003e\n\u003cli\u003eOutdoor and exposed fixings on gates, fencing and garden structures, where the A2 stainless steel's corrosion resistance keeps the fixing sound long term\u003c\/li\u003e\n\u003cli\u003eTrailer and agricultural equipment repair, from bodywork panels to guard and panel fixings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Guidance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer's inner diameter to the bolt or screw shank for a snug, non-loose fit rather than sizing up unnecessarily. When covering an enlarged, elongated or irregular hole, centre the washer so its full bearing face sits over sound material on both sides of the hole before tightening down - this spreads the clamping load evenly across the wide diameter rather than concentrating it at one edge, which is the whole point of fitting a penny washer in place of a standard one. On a bodywork repair, check the washer fully bridges the damaged area on the outer face before you tighten the fixing down, since it's this outer coverage that stops the joint working loose again through the enlarged hole.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich size do I need?\u003c\/strong\u003e\u003cbr\u003eMatch the inner diameter (d1) to your bolt or screw: for example, an M5 washer has a 5.3mm (0.21in) hole for an M5 fixing. All nine sizes, with outer diameter and thickness, are in the table above.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use them outdoors?\u003c\/strong\u003e\u003cbr\u003eYes. A2 stainless steel gives long-lasting corrosion resistance, even in harsh weather conditions, for gates, fencing, garden structures, trailers and vehicle bodywork.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill one cover an enlarged or elongated hole?\u003c\/strong\u003e\u003cbr\u003eYes, when its outer diameter reaches past the damage: centre the washer so its full bearing face sits over sound material on both sides of the hole, then tighten.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo they match ISO 7093?\u003c\/strong\u003e\u003cbr\u003eSizes M3 to M16 have the same inner and outer diameters (d1 and d2) as ISO 7093.\u003c\/p\u003e","brand":"DIYUK","offers":[{"title":"M2 \/ 2","offer_id":57280788136317,"sku":"DIN9021-A2-M2-2","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M2 \/ 10","offer_id":57280788070781,"sku":"DIN9021-A2-M2-10","price":5.72,"currency_code":"GBP","in_stock":true},{"title":"M2 \/ 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\/ 50","offer_id":57280787775869,"sku":"DIN9021-A2-M12-50","price":16.22,"currency_code":"GBP","in_stock":false},{"title":"M12 \/ 100","offer_id":57280787710333,"sku":"DIN9021-A2-M12-100","price":22.72,"currency_code":"GBP","in_stock":false},{"title":"M14 \/ 2","offer_id":57280787874173,"sku":"DIN9021-A2-M14-2","price":5.85,"currency_code":"GBP","in_stock":false},{"title":"M14 \/ 10","offer_id":57280787808637,"sku":"DIN9021-A2-M14-10","price":8.72,"currency_code":"GBP","in_stock":false},{"title":"M14 \/ 50","offer_id":57280787906941,"sku":"DIN9021-A2-M14-50","price":19.47,"currency_code":"GBP","in_stock":false},{"title":"M14 \/ 100","offer_id":57280787841405,"sku":"DIN9021-A2-M14-100","price":29.22,"currency_code":"GBP","in_stock":false},{"title":"M16 \/ 2","offer_id":57280788005245,"sku":"DIN9021-A2-M16-2","price":5.97,"currency_code":"GBP","in_stock":false},{"title":"M16 \/ 10","offer_id":57280787939709,"sku":"DIN9021-A2-M16-10","price":9.1,"currency_code":"GBP","in_stock":false},{"title":"M16 \/ 50","offer_id":57280788038013,"sku":"DIN9021-A2-M16-50","price":21.6,"currency_code":"GBP","in_stock":false},{"title":"M16 \/ 100","offer_id":57280787972477,"sku":"DIN9021-A2-M16-100","price":33.6,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/0245\/6454\/files\/din9021main.png?v=1702332095"},{"product_id":"bzp-steel-wing-nuts-din-315-american-form","title":"DIYUK Wing Nuts (Butterfly Nut), DIN 315 American Form, White Zinc Plated Steel, Tool-Free Hand Tightening, M3 M4 M5 M6 M8 M10 M12 M16, Packs of 2-50","description":"\u003cp\u003e\u003cstrong\u003eWing nuts to DIN 315, American form: white zinc plated steel butterfly nuts that tighten and release by hand.\u003c\/strong\u003e Two broad, rounded, ergonomic wings give enough leverage to draw a fastening up firmly, or free it again, without a spanner, socket or other tool. Eight metric sizes from M3 to M16, in packs of 2, 10, 20 or 50.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow It Works\u003c\/strong\u003e\u003cbr\u003e\nThread the wing nut onto a bolt, machine screw or threaded rod of the same size and turn the wings by hand. The rounded wings give a firm, comfortable grip and a secure hold for repeated hand tightening, even when wearing gloves or working in awkward, restricted spaces, and the joint stays a stable, reliable threaded connection. Where a fixing is assembled and taken apart often, hand operation saves significant time. Thread pitch, wing span and nut height increase in step with thread size, so the same design covers everything from small electronics and model-making fasteners through to substantial machine and equipment fastenings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTool-free: tightens and releases by hand, with no spanner or socket needed for normal use\u003c\/li\u003e\n\u003cli\u003eRounded, ergonomic wings: a comfortable grip and secure hold, including while wearing gloves\u003c\/li\u003e\n\u003cli\u003eStable, reliable threaded connection with easy hand operation\u003c\/li\u003e\n\u003cli\u003eWhite zinc plated steel: anti-corrosion coating for general-purpose corrosion resistance and protection against rust, suited to workshop, garage, automotive and outdoor use\u003c\/li\u003e\n\u003cli\u003eMade to DIN 315 American form, giving consistent, predictable dimensions and thread engagement across the size range\u003c\/li\u003e\n\u003cli\u003eWide size range from M3 up to M16, spanning light electronics and model-making work through to heavier machine and equipment fixings\u003c\/li\u003e\n\u003cli\u003eThread pitch matched to standard metric threads at every size, from 0.5mm at M3 up to 2.0mm at M16\u003c\/li\u003e\n\u003cli\u003eFits directly onto the equivalent metric bolt, machine screw or threaded rod, for example an M6 wing nut onto an M6 thread at 1.0mm pitch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eWing nut (also called butterfly nut or wingnut), American form\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eDIN 315\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eWhite zinc plated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003eMetric, M3 to M16 (8 sizes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWing span\u003c\/td\u003e\n\u003ctd\u003e20.0mm to 73.0mm (0.79in to 2.87in); see table below\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack sizes\u003c\/td\u003e\n\u003ctd\u003e2, 10, 20 or 50 wing nuts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eAvailable Sizes\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eThread size\u003c\/th\u003e\n\u003cth\u003eThread pitch\u003c\/th\u003e\n\u003cth\u003eWing span\u003c\/th\u003e\n\u003cth\u003eNut height\u003c\/th\u003e\n\u003cth\u003eBase diameter\u003c\/th\u003e\n\u003cth\u003eWing thickness\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003e0.5mm (0.02in)\u003c\/td\u003e\n\u003ctd\u003e20.0mm (0.79in)\u003c\/td\u003e\n\u003ctd\u003e10.0mm (0.39in)\u003c\/td\u003e\n\u003ctd\u003e9.0mm (0.35in)\u003c\/td\u003e\n\u003ctd\u003e2.5mm (0.10in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e0.7mm (0.03in)\u003c\/td\u003e\n\u003ctd\u003e21.0mm (0.83in)\u003c\/td\u003e\n\u003ctd\u003e11.5mm (0.45in)\u003c\/td\u003e\n\u003ctd\u003e10.0mm (0.39in)\u003c\/td\u003e\n\u003ctd\u003e3.0mm (0.12in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e0.8mm (0.03in)\u003c\/td\u003e\n\u003ctd\u003e21.0mm (0.83in)\u003c\/td\u003e\n\u003ctd\u003e11.5mm (0.45in)\u003c\/td\u003e\n\u003ctd\u003e11.0mm (0.43in)\u003c\/td\u003e\n\u003ctd\u003e3.0mm (0.12in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e1.0mm (0.04in)\u003c\/td\u003e\n\u003ctd\u003e26.0mm (1.02in)\u003c\/td\u003e\n\u003ctd\u003e14.0mm (0.55in)\u003c\/td\u003e\n\u003ctd\u003e12.0mm (0.47in)\u003c\/td\u003e\n\u003ctd\u003e3.4mm (0.13in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e1.25mm (0.05in)\u003c\/td\u003e\n\u003ctd\u003e31.5mm (1.24in)\u003c\/td\u003e\n\u003ctd\u003e16.0mm (0.63in)\u003c\/td\u003e\n\u003ctd\u003e14.0mm (0.55in)\u003c\/td\u003e\n\u003ctd\u003e3.8mm (0.15in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e1.5mm (0.06in)\u003c\/td\u003e\n\u003ctd\u003e37.0mm (1.46in)\u003c\/td\u003e\n\u003ctd\u003e20.0mm (0.79in)\u003c\/td\u003e\n\u003ctd\u003e18.0mm (0.71in)\u003c\/td\u003e\n\u003ctd\u003e4.3mm (0.17in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e1.75mm (0.07in)\u003c\/td\u003e\n\u003ctd\u003e50.0mm (1.97in)\u003c\/td\u003e\n\u003ctd\u003e26.0mm (1.02in)\u003c\/td\u003e\n\u003ctd\u003e24.0mm (0.94in)\u003c\/td\u003e\n\u003ctd\u003e5.2mm (0.20in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e2.0mm (0.08in)\u003c\/td\u003e\n\u003ctd\u003e73.0mm (2.87in)\u003c\/td\u003e\n\u003ctd\u003e37.5mm (1.48in)\u003c\/td\u003e\n\u003ctd\u003e29.0mm (1.14in)\u003c\/td\u003e\n\u003ctd\u003e6.4mm (0.25in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA tool-free fit and a wide size range make these wing nuts suited to hand-adjustable fixings wherever tool-free quick release is required:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWoodworking jigs, workbenches and sled fences, where a fence, stop or guide needs to be repositioned and re-locked repeatedly between cuts without breaking rhythm to find a spanner\u003c\/li\u003e\n\u003cli\u003eAccess panels, guards, control panels and inspection covers on machinery and equipment, so panels can be opened for maintenance, cleaning or inspection and closed again securely, entirely by hand\u003c\/li\u003e\n\u003cli\u003eBattery terminals and similar electrical connections that need frequent, tool-free access; the M3 size in particular suits small terminal posts and general electronics or model-making assemblies\u003c\/li\u003e\n\u003cli\u003eFlat-pack furniture and shelving assembly, where fixings benefit from being adjustable and re-tightenable by hand as the item settles in or is moved\u003c\/li\u003e\n\u003cli\u003eSports and recreational equipment that is set up, adjusted and packed away by hand\u003c\/li\u003e\n\u003cli\u003eQuick temporary connections in construction and steel structures\u003c\/li\u003e\n\u003cli\u003eGeneral DIY, garden and workshop fixings of all kinds, wherever finger-tight adjustment is more practical, and faster, than reaching for a spanner\u003c\/li\u003e\n\u003cli\u003eOutdoor equipment and fittings, where the zinc plating protects against rust and helps the nut keep turning freely by hand\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Guidance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the wing nut to the diameter and thread pitch of the bolt, machine screw or threaded rod being used, for example an M6 wing nut pairs with an M6 thread at 1.0mm pitch, and an M12 wing nut with an M12 thread at 1.75mm pitch, as set out in the size table above.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThread the nut onto the fastener and turn the wings by hand until the joint is snug\u003c\/li\u003e\n\u003cli\u003eNo spanner or socket is needed for normal tightening or loosening; the wide wing span provides enough leverage on its own\u003c\/li\u003e\n\u003cli\u003eTo free a nut that has been tightened hard, a light tap on the wings with a mallet, or a pair of pliers used to assist the first quarter-turn, will usually break it loose before hand-turning takes over again\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich size do I need?\u003c\/strong\u003e\u003cbr\u003eMatch the wing nut to the thread of your bolt or threaded rod: an M6 wing nut fits an M6 thread, 8mm wing nuts fit an M8 thread and 10mm wing nuts an M10 thread. For small threads there are 4mm wing nuts (M4) and butterfly nuts M3, the smallest size. The table above lists the pitch, wing span and height of every size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a tool to fit them?\u003c\/strong\u003e\u003cbr\u003eNo. The wings give enough leverage to tighten and loosen the nut by hand.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat size is the M10 wing nut?\u003c\/strong\u003e\u003cbr\u003eM10 has a 1.5mm thread pitch, a 37.0mm wing span and a 20.0mm height.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat pack sizes are available?\u003c\/strong\u003e\u003cbr\u003eEvery size comes in packs of 2, 10, 20 or 50 wing nuts.\u003c\/p\u003e\n","brand":"DIYUK","offers":[{"title":"M3 \/ 2","offer_id":57276624699773,"sku":"DIN315-M03-02","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M3 \/ 10","offer_id":57276624732541,"sku":"DIN315-M03-10","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M3 \/ 20","offer_id":57276624765309,"sku":"DIN315-M03-20","price":6.47,"currency_code":"GBP","in_stock":true},{"title":"M3 \/ 50","offer_id":57276624798077,"sku":"DIN315-M03-50","price":8.47,"currency_code":"GBP","in_stock":true},{"title":"M4 \/ 2","offer_id":57276624830845,"sku":"DIN315-M04-02","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M4 \/ 10","offer_id":57276624863613,"sku":"DIN315-M04-10","price":6.1,"currency_code":"GBP","in_stock":true},{"title":"M4 \/ 20","offer_id":57276624896381,"sku":"DIN315-M04-20","price":6.47,"currency_code":"GBP","in_stock":true},{"title":"M4 \/ 50","offer_id":57276624929149,"sku":"DIN315-M04-50","price":8.47,"currency_code":"GBP","in_stock":true},{"title":"M5 \/ 2","offer_id":57276624961917,"sku":"DIN315-M05-02","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M5 \/ 10","offer_id":57276624994685,"sku":"DIN315-M05-10","price":6.1,"currency_code":"GBP","in_stock":true},{"title":"M5 \/ 20","offer_id":57276625027453,"sku":"DIN315-M05-20","price":6.47,"currency_code":"GBP","in_stock":true},{"title":"M5 \/ 50","offer_id":57276625092989,"sku":"DIN315-M05-50","price":8.47,"currency_code":"GBP","in_stock":true},{"title":"M6 \/ 2","offer_id":57276625125757,"sku":"DIN315-M06-02","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M6 \/ 10","offer_id":57276625158525,"sku":"DIN315-M06-10","price":6.23,"currency_code":"GBP","in_stock":true},{"title":"M6 \/ 20","offer_id":57276625191293,"sku":"DIN315-M06-20","price":7.85,"currency_code":"GBP","in_stock":true},{"title":"M6 \/ 50","offer_id":57276625224061,"sku":"DIN315-M06-50","price":9.47,"currency_code":"GBP","in_stock":true},{"title":"M8 \/ 2","offer_id":57276625256829,"sku":"DIN315-M08-02","price":5.97,"currency_code":"GBP","in_stock":true},{"title":"M8 \/ 10","offer_id":57276625289597,"sku":"DIN315-M08-10","price":7.48,"currency_code":"GBP","in_stock":true},{"title":"M8 \/ 20","offer_id":57276625322365,"sku":"DIN315-M08-20","price":8.22,"currency_code":"GBP","in_stock":true},{"title":"M8 \/ 50","offer_id":57276625355133,"sku":"DIN315-M08-50","price":10.47,"currency_code":"GBP","in_stock":true},{"title":"M10 \/ 2","offer_id":57276625387901,"sku":"DIN315-M10-02","price":5.97,"currency_code":"GBP","in_stock":true},{"title":"M10 \/ 10","offer_id":57276625453437,"sku":"DIN315-M10-10","price":7.35,"currency_code":"GBP","in_stock":true},{"title":"M10 \/ 20","offer_id":57276625486205,"sku":"DIN315-M10-20","price":7.97,"currency_code":"GBP","in_stock":true},{"title":"M10 \/ 50","offer_id":57276625518973,"sku":"DIN315-M10-50","price":9.72,"currency_code":"GBP","in_stock":true},{"title":"M12 \/ 2","offer_id":57276625551741,"sku":"DIN315-M12-02","price":5.97,"currency_code":"GBP","in_stock":true},{"title":"M12 \/ 10","offer_id":57276625584509,"sku":"DIN315-M12-10","price":7.48,"currency_code":"GBP","in_stock":true},{"title":"M12 \/ 20","offer_id":57276625617277,"sku":"DIN315-M12-20","price":8.47,"currency_code":"GBP","in_stock":true},{"title":"M12 \/ 50","offer_id":57276625650045,"sku":"DIN315-M12-50","price":11.22,"currency_code":"GBP","in_stock":true},{"title":"M16 \/ 2","offer_id":57276625682813,"sku":"DIN315-M16-02","price":8.22,"currency_code":"GBP","in_stock":true},{"title":"M16 \/ 10","offer_id":57276625715581,"sku":"DIN315-M16-10","price":17.1,"currency_code":"GBP","in_stock":true},{"title":"M16 \/ 20","offer_id":57276625748349,"sku":"DIN315-M16-20","price":24.6,"currency_code":"GBP","in_stock":true},{"title":"M16 \/ 50","offer_id":57276625781117,"sku":"DIN315-M16-50","price":47.1,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/0245\/6454\/files\/315main.png?v=1723735006"},{"product_id":"a2-stainless-steel-split-lock-spring-washers-din-127b","title":"A2 Stainless Steel Split Lock Spring Washers - DIN 127B (M2-M22)","description":"\u003cp\u003eGuard bolted joints against loosening with our A2 Stainless Steel Split Lock Spring Washers, manufactured to the DIN 127, Type B dimensional standard. Pressed from austenitic A2 stainless steel and cold-formed into a helical coil with two flat, square-cut ends, each washer combines spring tension with a mechanical bite to keep nuts and bolts tight under vibration, repeated movement and thermal cycling.\u003c\/p\u003e\n\n\u003cp\u003eDIN 127 was formally withdrawn from the current German DIN catalogue in the early 1990s, but the Type B (square-end) profile remains the de facto industry reference for split lock washer dimensions and continues to be manufactured and stocked worldwide to the same sizing. When the washer is compressed flat under a tightened fastener, the coiled ring stores spring energy and continues pushing back against the bearing face, helping to maintain clamping tension as a joint beds in or experiences vibration. The sharp, square-cut ends also key very slightly into the mating surfaces, adding a mechanical resistance to counter-rotation on top of the spring action.\u003c\/p\u003e\n\n\u003cp\u003eStocked across 14 sizes from M2 up to M22, with individual washer weights ranging from roughly 0.03g (0.001oz) for the smallest M2 washer up to around 16.5g (0.58oz) for the largest M22 washer, there is a size to suit fixings from delicate electronics and instrument work right through to heavy structural and automotive assemblies.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration and loosening resistance:\u003c\/strong\u003e the helical spring action continues to load the joint after tightening, helping to resist the gradual loosening caused by vibration, shock and repeated movement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA2 stainless steel construction:\u003c\/strong\u003e austenitic A2 stainless steel resists rust and general atmospheric corrosion far better than plain or zinc-plated carbon steel, making these washers suited to damp, humid or outdoor conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual locking action:\u003c\/strong\u003e spring tension plus a sharp, square-cut biting edge, working together to resist both loosening and counter-rotation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN 127B dimensional standard:\u003c\/strong\u003e manufactured to the long-established Type B (square-end) sizing, so fit and function are consistent and predictable size after size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable and low-maintenance:\u003c\/strong\u003e stainless construction means no plating to wear through or flake off, and washers can typically be reused across multiple assembly\/disassembly cycles provided they have not been fully flattened.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuinely wide size range:\u003c\/strong\u003e 14 sizes held in stock, from M2 up to M22, covering fine-pitch electronics and instrument fixings through to heavy-duty structural and automotive bolts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eMaterial \u0026amp; Corrosion Resistance\u003c\/h3\u003e\n\u003cp\u003eThese washers are manufactured from A2 (also widely known as 18-8) austenitic stainless steel, an alloy of roughly 17.5-19.5% chromium and 8-10.5% nickel that gives excellent resistance to rust and general corrosion in indoor, outdoor and freshwater environments.\u003c\/p\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomotive assembly and repair\u003c\/strong\u003e where corrosion resistance and vibration resistance both matter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial and agricultural machinery\u003c\/strong\u003e subject to continuous vibration or cyclic loading.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStructural steelwork, fencing and outdoor construction\u003c\/strong\u003e exposed to weather.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical enclosures, control panels and cabinet hardware\u003c\/strong\u003e where a non-rusting fixing is required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrumentation, electronics and precision assembly\u003c\/strong\u003e using the smaller M2-M5 sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral DIY, maintenance and repair work\u003c\/strong\u003e around the home and workshop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cp\u003eDimensions below follow the DIN 127, Type B standard. Metric figures are shown first, with the imperial (inch) equivalent in brackets; inner diameter (d1) and thickness (s) are given as a tolerance range, outer diameter (d2) as the standard's maximum permitted value.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eInner Ø (d1)\u003c\/th\u003e\n\u003cth\u003eOuter Ø (d2) max\u003c\/th\u003e\n\u003cth\u003eThickness (s)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eM2\u003c\/td\u003e\n\u003ctd\u003e2.1–2.4mm (0.083–0.094in)\u003c\/td\u003e\n\u003ctd\u003e4.4mm (0.173in)\u003c\/td\u003e\n\u003ctd\u003e0.4–0.6mm (0.016–0.024in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003e3.1–3.4mm (0.122–0.134in)\u003c\/td\u003e\n\u003ctd\u003e6.2mm (0.244in)\u003c\/td\u003e\n\u003ctd\u003e0.7–0.9mm (0.028–0.035in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e4.1–4.4mm (0.161–0.173in)\u003c\/td\u003e\n\u003ctd\u003e7.6mm (0.299in)\u003c\/td\u003e\n\u003ctd\u003e0.8–1.0mm (0.031–0.039in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e5.1–5.4mm (0.201–0.213in)\u003c\/td\u003e\n\u003ctd\u003e9.2mm (0.362in)\u003c\/td\u003e\n\u003ctd\u003e1.1–1.3mm (0.043–0.051in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e6.4–6.5mm (0.252–0.256in)\u003c\/td\u003e\n\u003ctd\u003e11.8mm (0.465in)\u003c\/td\u003e\n\u003ctd\u003e1.5–1.7mm (0.059–0.067in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM7\u003c\/td\u003e\n\u003ctd\u003e7.1–7.5mm (0.280–0.295in)\u003c\/td\u003e\n\u003ctd\u003e12.8mm (0.504in)\u003c\/td\u003e\n\u003ctd\u003e1.5–1.7mm (0.059–0.067in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e8.1–8.5mm (0.319–0.335in)\u003c\/td\u003e\n\u003ctd\u003e14.8mm (0.583in)\u003c\/td\u003e\n\u003ctd\u003e1.9–2.1mm (0.075–0.083in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e10.2–10.7mm (0.402–0.421in)\u003c\/td\u003e\n\u003ctd\u003e18.1mm (0.713in)\u003c\/td\u003e\n\u003ctd\u003e2.05–2.35mm (0.081–0.093in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e12.2–12.7mm (0.480–0.500in)\u003c\/td\u003e\n\u003ctd\u003e21.1mm (0.831in)\u003c\/td\u003e\n\u003ctd\u003e2.35–2.65mm (0.093–0.104in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM14\u003c\/td\u003e\n\u003ctd\u003e14.2–14.7mm (0.559–0.579in)\u003c\/td\u003e\n\u003ctd\u003e24.1mm (0.949in)\u003c\/td\u003e\n\u003ctd\u003e2.85–3.15mm (0.112–0.124in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e16.2–17.0mm (0.638–0.669in)\u003c\/td\u003e\n\u003ctd\u003e27.4mm (1.079in)\u003c\/td\u003e\n\u003ctd\u003e3.3–3.7mm (0.130–0.146in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM18\u003c\/td\u003e\n\u003ctd\u003e18.2–19.0mm (0.717–0.748in)\u003c\/td\u003e\n\u003ctd\u003e29.4mm (1.157in)\u003c\/td\u003e\n\u003ctd\u003e3.3–3.7mm (0.130–0.146in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003ctd\u003e20.2–21.2mm (0.795–0.835in)\u003c\/td\u003e\n\u003ctd\u003e33.6mm (1.323in)\u003c\/td\u003e\n\u003ctd\u003e3.8–4.2mm (0.150–0.165in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM22\u003c\/td\u003e\n\u003ctd\u003e22.5–23.5mm (0.886–0.925in)\u003c\/td\u003e\n\u003ctd\u003e35.9mm (1.413in)\u003c\/td\u003e\n\u003ctd\u003e3.8–4.2mm (0.150–0.165in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eStandard:\u003c\/strong\u003e DIN 127, Type B\u003cbr\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Helical spring split lock washer\u003cbr\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e A2 (18-8) austenitic stainless steel\u003cbr\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Plain (natural stainless, uncoated)\u003cbr\u003e\n\u003cstrong\u003eCorrosion resistance:\u003c\/strong\u003e Excellent for general-purpose and freshwater use\u003cbr\u003e\n\u003cstrong\u003eThread direction:\u003c\/strong\u003e For right-hand threads only\u003cbr\u003e\n\u003cstrong\u003eSizes held in stock:\u003c\/strong\u003e M2, M3, M4, M5, M6, M7, M8, M10, M12, M14, M16, M18, M20, M22\u003c\/p\u003e\n\n\u003ch3\u003eInstallation \u0026amp; Fitting Guidance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelect the washer whose size matches the bolt, screw or stud thread (for example, an M8 washer for an M8 fastener).\u003c\/li\u003e\n\u003cli\u003eFit the washer directly under the nut or bolt head, against the bearing surface, before tightening to the correct torque for the application.\u003c\/li\u003e\n\u003cli\u003eTighten until the washer is fully compressed flat.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eOrder dispatched fast from our UK warehouse. Add these A2 stainless steel DIN 127B split lock washers to your basket today for a corrosion-resistant, vibration-resistant fixing you can rely on.\u003c\/p\u003e","brand":"DIYUK","offers":[{"title":"M2 \/ 1","offer_id":53529857884541,"sku":"DIN127-A2-M2-1","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M2 \/ 2","offer_id":53529857982845,"sku":"DIN127-A2-M2-2","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M2 \/ 10","offer_id":53529857917309,"sku":"DIN127-A2-M2-10","price":5.85,"currency_code":"GBP","in_stock":false},{"title":"M2 \/ 20","offer_id":53529858015613,"sku":"DIN127-A2-M2-20","price":5.85,"currency_code":"GBP","in_stock":false},{"title":"M2 \/ 50","offer_id":53529858048381,"sku":"DIN127-A2-M2-50","price":5.97,"currency_code":"GBP","in_stock":false},{"title":"M2 \/ 100","offer_id":53529857950077,"sku":"DIN127-A2-M2-100","price":6.23,"currency_code":"GBP","in_stock":false},{"title":"M3 \/ 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and Climbing Walls, M4 M5 M6 M8","description":"\u003cp\u003e\u003cstrong\u003e4-prong T-nuts (tee nuts, also known as captive nuts, claw nuts or threaded inserts for wood) in white zinc plated carbon steel, for a strong, permanent and reusable metric thread in wood, plywood, MDF, particleboard and other wood-based panels.\u003c\/strong\u003e The four sharp prongs bite into the material as the nut is driven in and lock it against rotation, so the bolt can be tightened and undone again and again without the nut spinning in its hole. Five sizes, from M4 x 8mm up to M8 x 11mm, in packs of 4 up to 1000.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow It Works\u003c\/strong\u003e\u003cbr\u003e\nEach 4 pronged tee nut has a metric internal thread in its barrel and a flanged collar fitted with four sharp prongs. The barrel goes into a hole drilled to its diameter; as the nut is driven home, the prongs bite into the wood and stop it turning when the bolt is tightened, with no additional fasteners. The collar sits flush with the surface, so the nut is discreet once fitted. It joins wooden parts to anything with a metric thread: standard metric bolts, machine screws and furniture connector bolts in the matching size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFour sharp prongs bite into the wood for secure anti-rotation locking, with no additional fasteners\u003c\/li\u003e\n\u003cli\u003eA durable metric thread in wood that can be tightened and undone again and again\u003c\/li\u003e\n\u003cli\u003eFlanged collar sits flush with the surface for a neat, snag-free finish; discreet once fitted\u003c\/li\u003e\n\u003cli\u003eAnti-corrosion white zinc coating on carbon steel\u003c\/li\u003e\n\u003cli\u003eFast installation by hand, without specialist tools\u003c\/li\u003e\n\u003cli\u003eCompatible with standard metric bolts, machine screws and furniture connector bolts in the matching thread size\u003c\/li\u003e\n\u003cli\u003eInternal thread runs the full depth of the barrel, giving the bolt the whole barrel length to engage with\u003c\/li\u003e\n\u003cli\u003eFive sizes, M4 to M8, with barrel lengths from 8.0mm to 15.0mm (0.31in to 0.59in) to suit different panel thicknesses\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaterial: carbon steel · Finish: white zinc plated (anti-corrosion coating)\u003c\/li\u003e\n\u003cli\u003eType: 4-prong T-nut (tee nut) with flanged collar and metric internal thread\u003c\/li\u003e\n\u003cli\u003eThread sizes: M4, M5, M6, M8 · Barrel lengths: 8.0mm (0.31in) to 15.0mm (0.59in)\u003c\/li\u003e\n\u003cli\u003ePack sizes: 4, 10, 50, 100, 200, 400 or 1000 T-nuts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eBarrel diameter\u003c\/th\u003e\n\u003cth\u003eBarrel length\u003c\/th\u003e\n\u003cth\u003eFlange diameter\u003c\/th\u003e\n\u003cth\u003eFlange thickness\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eM4 x 8mm\u003c\/td\u003e\n\u003ctd\u003e5.7mm (0.22in)\u003c\/td\u003e\n\u003ctd\u003e8.0mm (0.31in)\u003c\/td\u003e\n\u003ctd\u003e15.0mm (0.59in)\u003c\/td\u003e\n\u003ctd\u003e0.8mm (0.03in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM5 x 8mm\u003c\/td\u003e\n\u003ctd\u003e6.2mm (0.24in)\u003c\/td\u003e\n\u003ctd\u003e8.0mm (0.31in)\u003c\/td\u003e\n\u003ctd\u003e18.0mm (0.71in)\u003c\/td\u003e\n\u003ctd\u003e1.0mm (0.04in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM6 x 12mm\u003c\/td\u003e\n\u003ctd\u003e7.3mm (0.29in)\u003c\/td\u003e\n\u003ctd\u003e12.0mm (0.47in)\u003c\/td\u003e\n\u003ctd\u003e19.0mm (0.75in)\u003c\/td\u003e\n\u003ctd\u003e1.2mm (0.05in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM6 x 15mm\u003c\/td\u003e\n\u003ctd\u003e7.3mm (0.29in)\u003c\/td\u003e\n\u003ctd\u003e15.0mm (0.59in)\u003c\/td\u003e\n\u003ctd\u003e19.0mm (0.75in)\u003c\/td\u003e\n\u003ctd\u003e1.2mm (0.05in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM8 x 11mm\u003c\/td\u003e\n\u003ctd\u003e9.1mm (0.36in)\u003c\/td\u003e\n\u003ctd\u003e11.0mm (0.43in)\u003c\/td\u003e\n\u003ctd\u003e22.2mm (0.87in)\u003c\/td\u003e\n\u003ctd\u003e1.2mm (0.05in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eChoose the barrel length to suit the panel thickness, so the barrel stays inside the panel once the T-nut is seated.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor joining wooden parts to parts with a metric thread, wherever an assembly will be taken apart and put back together and needs a strong, reusable thread in timber, plywood or MDF:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFurniture: upholstered furniture, table legs and chairs, plus cabinet ends, worktops and carcass panels\u003c\/li\u003e\n\u003cli\u003eKnock-down and flat-pack furniture: connector bolts that are tightened, and sometimes re-tightened, when furniture is moved or reassembled\u003c\/li\u003e\n\u003cli\u003eBed frames: bolt-together frame and rail joints in solid timber or engineered wood panels\u003c\/li\u003e\n\u003cli\u003eOutdoor and garden furniture\u003c\/li\u003e\n\u003cli\u003eClimbing walls: fixing bolt-on holds into plywood climbing wall panels, tightened and undone again and again\u003c\/li\u003e\n\u003cli\u003eTimber, plywood and MDF structures\u003c\/li\u003e\n\u003cli\u003eWorkshop jigs and fixtures: a reusable metric thread in MDF or plywood jig bodies for bolt-on stops, clamps and guides\u003c\/li\u003e\n\u003cli\u003eSpeaker cabinets: driver mounting bolts in an MDF baffle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Guidance\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eChoose the size whose barrel length suits the panel thickness, so the barrel stays inside the panel once fully seated.\u003c\/li\u003e\n\u003cli\u003eDrill a pilot hole to match the barrel diameter in the table above, for a snug push fit.\u003c\/li\u003e\n\u003cli\u003eInsert the barrel into the pilot hole.\u003c\/li\u003e\n\u003cli\u003eOn softwood, tap the flange home with a mallet for a quick, direct fit.\u003c\/li\u003e\n\u003cli\u003eOn hardwood or delicate panels, thread a bolt through from the reverse side and tighten it to draw the prongs in evenly, then back the bolt out once the flange sits flush.\u003c\/li\u003e\n\u003cli\u003eOnce fitted, the T-nut takes metric bolts, machine screws or furniture connector bolts in the matching thread size.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich size do I need?\u003c\/strong\u003e\u003cbr\u003eMatch the thread to your bolt (M4, M5, M6 or M8), then choose a barrel length that suits the panel thickness: M4 and M5 T-nuts have an 8mm barrel, M6 T nuts 12mm or 15mm, and pronged T nuts M8 an 11mm barrel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill an M6 bolt fit?\u003c\/strong\u003e\u003cbr\u003eYes. Each M6 T-nut is a 6mm captive nut for standard M6 bolts, machine screws and furniture connector bolts, and these 6mm captive nuts come with a 12mm or 15mm barrel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat size hole do I drill?\u003c\/strong\u003e\u003cbr\u003eA hole matching the barrel diameter: 5.7mm for M4, 6.2mm for M5, 7.3mm for M6 and 9.1mm for M8.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need special tools?\u003c\/strong\u003e\u003cbr\u003eNo. T-nuts fit by hand: tap them home with a mallet in softwood, or draw them in with a bolt in hardwood.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat pack sizes are available?\u003c\/strong\u003e\u003cbr\u003eEvery size comes in packs of 4, 10, 50, 100, 200, 400 or 1000 T-nuts.\u003c\/p\u003e\n","brand":"DIYUK","offers":[{"title":"M4 x 8mm \/ 4","offer_id":54970423083389,"sku":"TNUTS-M4 x 8mm-004","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M4 x 8mm \/ 10","offer_id":54970423116157,"sku":"TNUTS-M4 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934\u003c\/strong\u003e, in 18 sizes from M2.5 up to M36, each in packs of 1, 10, 20, 50 or 100. Their standard height and hexagonal shape give a secure, stable connection, and the DIN 934 hexagon nut is one of the most widely used and versatile fastening elements, compatible with a wide range of metric bolts and threaded rods.\u003c\/p\u003e\n\u003cp\u003eThe hexagon body carries a bright zinc-plated (BZP) finish, giving a bright silver appearance and general-purpose corrosion resistance. Every size features standard right-hand metric coarse threading, machined to DIN 934 dimensions, so each nut mates securely with any correctly sized metric bolt, screw or threaded rod. Fitting and removal need nothing more specialist than a standard open-end or socket spanner sized to the width across flats given in the specification table below.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured to DIN 934, with the dimensions for every size listed in the specification table below\u003c\/li\u003e\n\u003cli\u003eBright zinc-plated (BZP) finish for a bright silver appearance and general-purpose corrosion resistance\u003c\/li\u003e\n\u003cli\u003eStandard right-hand metric coarse thread throughout the range\u003c\/li\u003e\n\u003cli\u003eWide size range from M2.5 up to M36\u003c\/li\u003e\n\u003cli\u003eFits any correctly sized metric bolt, screw or threaded rod, and installs with a standard open-end or socket spanner\u003c\/li\u003e\n\u003cli\u003eStandard height and hexagonal shape for a secure, stable connection\u003c\/li\u003e\n\u003cli\u003eOne of the most widely used and versatile fastening elements, compatible with a wide range of metric bolts and threaded rods\u003c\/li\u003e\n\u003cli\u003eEvery size available in packs of 1, 10, 20, 50 or 100\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eThread size\u003c\/th\u003e\n\u003cth\u003eThread pitch\u003c\/th\u003e\n\u003cth\u003eWidth across flats\u003c\/th\u003e\n\u003cth\u003eNut height\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eM2.5\u003c\/td\u003e\n\u003ctd\u003e0.45mm (0.02in)\u003c\/td\u003e\n\u003ctd\u003e5mm (0.20in)\u003c\/td\u003e\n\u003ctd\u003e2.0mm (0.08in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003e0.5mm (0.02in)\u003c\/td\u003e\n\u003ctd\u003e5.5mm (0.22in)\u003c\/td\u003e\n\u003ctd\u003e2.4mm (0.09in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e0.7mm (0.03in)\u003c\/td\u003e\n\u003ctd\u003e7mm (0.28in)\u003c\/td\u003e\n\u003ctd\u003e3.2mm (0.13in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e0.8mm (0.03in)\u003c\/td\u003e\n\u003ctd\u003e8mm (0.31in)\u003c\/td\u003e\n\u003ctd\u003e4.0mm (0.16in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e1.0mm (0.04in)\u003c\/td\u003e\n\u003ctd\u003e10mm (0.39in)\u003c\/td\u003e\n\u003ctd\u003e5.0mm (0.20in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e1.25mm (0.05in)\u003c\/td\u003e\n\u003ctd\u003e13mm (0.51in)\u003c\/td\u003e\n\u003ctd\u003e6.5mm (0.26in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e1.5mm (0.06in)\u003c\/td\u003e\n\u003ctd\u003e17mm (0.67in)\u003c\/td\u003e\n\u003ctd\u003e8.0mm (0.31in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e1.75mm (0.07in)\u003c\/td\u003e\n\u003ctd\u003e19mm (0.75in)\u003c\/td\u003e\n\u003ctd\u003e10.0mm (0.39in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM14\u003c\/td\u003e\n\u003ctd\u003e2.0mm (0.08in)\u003c\/td\u003e\n\u003ctd\u003e22mm (0.87in)\u003c\/td\u003e\n\u003ctd\u003e11.0mm (0.43in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e2.0mm (0.08in)\u003c\/td\u003e\n\u003ctd\u003e24mm (0.94in)\u003c\/td\u003e\n\u003ctd\u003e13.0mm (0.51in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM18\u003c\/td\u003e\n\u003ctd\u003e2.5mm (0.10in)\u003c\/td\u003e\n\u003ctd\u003e27mm (1.06in)\u003c\/td\u003e\n\u003ctd\u003e15.0mm (0.59in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003ctd\u003e2.5mm (0.10in)\u003c\/td\u003e\n\u003ctd\u003e30mm (1.18in)\u003c\/td\u003e\n\u003ctd\u003e16.0mm (0.63in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM22\u003c\/td\u003e\n\u003ctd\u003e2.5mm (0.10in)\u003c\/td\u003e\n\u003ctd\u003e32mm (1.26in)\u003c\/td\u003e\n\u003ctd\u003e18.0mm (0.71in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM24\u003c\/td\u003e\n\u003ctd\u003e3.0mm (0.12in)\u003c\/td\u003e\n\u003ctd\u003e36mm (1.42in)\u003c\/td\u003e\n\u003ctd\u003e19.0mm (0.75in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM27\u003c\/td\u003e\n\u003ctd\u003e3.0mm (0.12in)\u003c\/td\u003e\n\u003ctd\u003e41mm (1.61in)\u003c\/td\u003e\n\u003ctd\u003e22.0mm (0.87in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM30\u003c\/td\u003e\n\u003ctd\u003e3.5mm (0.14in)\u003c\/td\u003e\n\u003ctd\u003e46mm (1.81in)\u003c\/td\u003e\n\u003ctd\u003e24.0mm (0.94in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM33\u003c\/td\u003e\n\u003ctd\u003e3.5mm (0.14in)\u003c\/td\u003e\n\u003ctd\u003e50mm (1.97in)\u003c\/td\u003e\n\u003ctd\u003e26.0mm (1.02in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM36\u003c\/td\u003e\n\u003ctd\u003e4.0mm (0.16in)\u003c\/td\u003e\n\u003ctd\u003e55mm (2.17in)\u003c\/td\u003e\n\u003ctd\u003e29.0mm (1.14in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eStandard: DIN 934 · Finish: Bright zinc-plated (BZP) · Thread: Right-hand metric coarse · Sizes: M2.5 to M36 · Pack sizes: 1, 10, 20, 50 or 100\u003c\/p\u003e\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWorkshop benches and fixtures: permanent or semi-permanent assemblies.\u003c\/li\u003e\n\u003cli\u003eGeneral mechanical assemblies: mates with any correctly sized metric bolt, screw or threaded rod.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical engineering and machine building\u003c\/strong\u003e: a standard DIN 934 nut that mates with any correctly sized metric bolt or threaded rod.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectronics, household appliances and general industrial use\u003c\/strong\u003e: sizes from M2.5 up to M36, fitted with a standard open-end or socket spanner.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetric bolts, screws and threaded rod\u003c\/strong\u003e: fits any correctly sized metric bolt, screw or threaded rod.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Guidance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMatch the nut to the corresponding metric bolt, screw or threaded rod diameter and thread pitch shown in the specification table above\u003c\/li\u003e\n\u003cli\u003eTighten with a calibrated torque wrench to the fastener manufacturer's recommended setting rather than by feel\u003c\/li\u003e\n\u003cli\u003eFit a flat washer under the nut to spread the clamping load over a wider bearing surface\u003c\/li\u003e\n\u003cli\u003eWhere the assembly will be subject to vibration, add a spring or serrated lock washer for extra security against loosening\u003c\/li\u003e\n\u003cli\u003eUse a standard open-end or socket spanner sized to the width across flats given in the specification table above\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich spanner size do I need?\u003c\/strong\u003e\u003cbr\u003eMatch the spanner or socket to the width across flats: an M6 nut takes 10mm, an M8 nut 13mm, an M10 nut 17mm and an M12 nut 19mm. The size for every nut is in the Specification table.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the nut fit my bolt?\u003c\/strong\u003e\u003cbr\u003eYes, when the diameter and thread pitch match: every nut has a standard right-hand metric coarse thread, so an M10 nut fits an M10 bolt, screw or threaded rod.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat finish do the nuts have?\u003c\/strong\u003e\u003cbr\u003eA bright zinc-plated (BZP) finish, giving a bright silver appearance and general-purpose corrosion resistance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a washer?\u003c\/strong\u003e\u003cbr\u003eA flat washer under the nut spreads the clamping load over a wider bearing surface. Where the assembly will be subject to vibration, add a spring or serrated lock washer for extra security against loosening.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat pack sizes are available?\u003c\/strong\u003e\u003cbr\u003eEvery size comes in packs of 1, 10, 20, 50 or 100 nuts.\u003c\/p\u003e\n","brand":"DIYUK","offers":[{"title":"M2.5 \/ 1","offer_id":55171419373949,"sku":"DIN934-M2.5-1","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M2.5 \/ 10","offer_id":55171458793853,"sku":"DIN934-M2.5-10","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M2.5 \/ 20","offer_id":55171458826621,"sku":"DIN934-M2.5-20","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M2.5 \/ 50","offer_id":55171458859389,"sku":"DIN934-M2.5-50","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M2.5 \/ 100","offer_id":55171458892157,"sku":"DIN934-M2.5-100","price":5.97,"currency_code":"GBP","in_stock":true},{"title":"M3 \/ 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nuts\u003c\/strong\u003e (also known as long nuts, extension nuts or connecting nuts): an elongated hexagon nut with a body length of three times the nominal thread diameter (3d) from M6 to M24 (25mm on the M5), used to join two lengths of the same metric threaded rod or stud into one continuous connection. The extended body lets two separate rod ends wind in from opposite sides and meet centrally inside the nut, turning two lengths of studding into a single rigid, in-line run.\u003c\/p\u003e\n\u003cp\u003eThe extra length compared with a standard hex nut gives significantly more thread engagement than a standard nut of the same diameter, spreading the load over a longer run of thread and increasing the tensile capacity of the joint. The nut body is manufactured from steel in property class 6 and finished in bright zinc plating (BZP), giving general-purpose corrosion resistance.\u003c\/p\u003e\n\u003cp\u003eThe hexagon profile allows tightening from either end with a standard open-end or socket spanner, so two rod ends can be wound in from opposite sides and torqued up against one another inside the nut, or a single continuous length of studding can be joined mid-run. In effect, a single coupling nut does the job that would otherwise need a full-length replacement rod, letting a shorter offcut or a second length of the same threaded rod be pressed into service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDIN 6334 hexagon coupling nut, also known as a long nut, extension nut or connecting nut, for joining threaded rod of the same metric diameter\u003c\/li\u003e\n\u003cli\u003eExtended body length of three times the nominal thread diameter (3d) from M6 to M24 (25mm on the M5), giving significantly more thread engagement than a standard hex nut of the same size\u003c\/li\u003e\n\u003cli\u003eSteel construction in property class 6\u003c\/li\u003e\n\u003cli\u003eBright zinc plated (BZP) finish for general-purpose corrosion resistance\u003c\/li\u003e\n\u003cli\u003eFull hexagon profile allows tightening from either end with a standard open-end or socket spanner\u003c\/li\u003e\n\u003cli\u003eFull-length internal thread lets two rod ends be wound in from opposite sides to meet centrally, or joins a continuous run of studding mid-length\u003c\/li\u003e\n\u003cli\u003eNine sizes from M5 up to M24 for metric threaded rod used in construction and engineering, in packs of 2, 5, 10, 25, 50 or 100\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChoosing the Right Size\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the coupling nut to the nominal diameter of the threaded rod being joined: an M10 rod needs an M10 coupling nut, and so on. Use the width across flats figure in the table below to check which spanner or socket size you will need before starting work, and the length figure to confirm the nut will fit the available space if the rod is being joined inside a confined void, duct or ceiling grid.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eThread size\u003c\/th\u003e\n\u003cth\u003eThread pitch\u003c\/th\u003e\n\u003cth\u003eWidth across flats\u003c\/th\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e0.8mm (0.03in)\u003c\/td\u003e\n\u003ctd\u003e8mm (0.31in)\u003c\/td\u003e\n\u003ctd\u003e25mm (0.98in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e1.0mm (0.04in)\u003c\/td\u003e\n\u003ctd\u003e10mm (0.39in)\u003c\/td\u003e\n\u003ctd\u003e18mm (0.71in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e1.25mm (0.05in)\u003c\/td\u003e\n\u003ctd\u003e13mm (0.51in)\u003c\/td\u003e\n\u003ctd\u003e24mm (0.94in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e1.5mm (0.06in)\u003c\/td\u003e\n\u003ctd\u003e17mm (0.67in)\u003c\/td\u003e\n\u003ctd\u003e30mm (1.18in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e1.75mm (0.07in)\u003c\/td\u003e\n\u003ctd\u003e19mm (0.75in)\u003c\/td\u003e\n\u003ctd\u003e36mm (1.42in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM14\u003c\/td\u003e\n\u003ctd\u003e2.0mm (0.08in)\u003c\/td\u003e\n\u003ctd\u003e22mm (0.87in)\u003c\/td\u003e\n\u003ctd\u003e42mm (1.65in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e2.0mm (0.08in)\u003c\/td\u003e\n\u003ctd\u003e24mm (0.94in)\u003c\/td\u003e\n\u003ctd\u003e48mm (1.89in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003ctd\u003e2.5mm (0.10in)\u003c\/td\u003e\n\u003ctd\u003e30mm (1.18in)\u003c\/td\u003e\n\u003ctd\u003e60mm (2.36in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM24\u003c\/td\u003e\n\u003ctd\u003e3.0mm (0.12in)\u003c\/td\u003e\n\u003ctd\u003e36mm (1.42in)\u003c\/td\u003e\n\u003ctd\u003e72mm (2.83in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Guidance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSelect the coupling nut that matches the nominal diameter of the threaded rod or stud being joined; thread size and pitch must match on both pieces of rod for the joint to draw up correctly. The internal thread runs the full length of the nut, so each rod is wound in from its own end until the two meet centrally inside the nut body; because the nut body is three times the thread diameter in length (25mm on the M5), there is enough working length to wind each rod in comfortably before the joint is fully engaged.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAim for at least one full diameter of thread engagement on each side of the joint for a secure, load-bearing connection\u003c\/li\u003e\n\u003cli\u003eApply a thread-locking compound before assembly if a permanent joint is required\u003c\/li\u003e\n\u003cli\u003eTighten using a standard open-end or socket spanner across the hex flats; the nut can be held or turned from either end\u003c\/li\u003e\n\u003cli\u003eWhen joining two separate lengths of studding, wind both rods in evenly so the joint sits centrally inside the nut rather than loaded to one end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExtending threaded rod (studding) runs in suspended ceiling grids where a single length doesn’t reach the required drop\u003c\/li\u003e\n\u003cli\u003eCable tray, containment and basket systems where threaded drop rods need to be lengthened or joined mid-run\u003c\/li\u003e\n\u003cli\u003eHVAC pipe and duct hangers, joining sections of support rod to reach the required suspension height\u003c\/li\u003e\n\u003cli\u003eJoining anchor bolts, tie rods and fixings in steel fabrication and racking assemblies\u003c\/li\u003e\n\u003cli\u003eGeneral engineering, machinery guarding and adjustable furniture assembly wherever a rigid, in-line connection between two lengths of the same threaded rod is required\u003c\/li\u003e\n\u003cli\u003eKeeping a range of sizes on hand as a general-purpose spare for ad-hoc studding repairs and extensions on site\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is a coupling nut?\u003c\/strong\u003e\u003cbr\u003eA coupling nut, also called a long nut, extension nut or connecting nut, is an elongated hexagon nut threaded along its full length. Two lengths of the same metric threaded rod or stud wind in from opposite ends and meet inside it, joining them into one straight run.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat sizes are available?\u003c\/strong\u003e\u003cbr\u003eNine sizes (thread diameter x length): M5 x 25mm, M6 x 18mm, M8 x 24mm, M10 x 30mm, M12 x 36mm, M14 x 42mm, M16 x 48mm, M20 x 60mm and M24 x 72mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat pack sizes are available?\u003c\/strong\u003e\u003cbr\u003ePacks of 2, 5, 10, 25, 50 or 100 in every size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat size spanner do I need?\u003c\/strong\u003e\u003cbr\u003eMeasured across the flats: 8mm for M5, 10mm for M6, 13mm for M8, 17mm for M10, 19mm for M12, 22mm for M14, 24mm for M16, 30mm for M20 and 36mm for M24.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre extension nuts and connecting nuts the same as coupling nuts?\u003c\/strong\u003e\u003cbr\u003eYes, these are different names for the same long hex nut: M16 extension nuts are M16 coupling nuts, and an M20 connecting nut is an M20 coupling nut.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich coupling nut fits my rod?\u003c\/strong\u003e\u003cbr\u003eMatch the thread size: an M20 threaded rod needs an M20 coupling nut, an M16 rod an M16 coupling nut, and so on.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are they made of?\u003c\/strong\u003e\u003cbr\u003eSteel, property class 6, with a bright zinc plated (BZP) finish.\u003c\/p\u003e","brand":"DIYUK","offers":[{"title":"M5 x 25mm \/ 2","offer_id":57288025735549,"sku":"DIN6334-M5-2","price":5.6,"currency_code":"GBP","in_stock":true},{"title":"M5 x 25mm \/ 5","offer_id":57288025768317,"sku":"DIN6334-M5-5","price":6.1,"currency_code":"GBP","in_stock":true},{"title":"M5 x 25mm \/ 10","offer_id":57288025801085,"sku":"DIN6334-M5-10","price":6.47,"currency_code":"GBP","in_stock":true},{"title":"M5 x 25mm \/ 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50","offer_id":57288026063229,"sku":"DIN6334-M6-50","price":9.22,"currency_code":"GBP","in_stock":false},{"title":"M6 x 18mm \/ 100","offer_id":57288026095997,"sku":"DIN6334-M6-100","price":13.72,"currency_code":"GBP","in_stock":false},{"title":"M8 x 24mm \/ 2","offer_id":57288026128765,"sku":"DIN6334-M8-2","price":5.6,"currency_code":"GBP","in_stock":true},{"title":"M8 x 24mm \/ 5","offer_id":57288026161533,"sku":"DIN6334-M8-5","price":7.22,"currency_code":"GBP","in_stock":true},{"title":"M8 x 24mm \/ 10","offer_id":57288026194301,"sku":"DIN6334-M8-10","price":7.48,"currency_code":"GBP","in_stock":true},{"title":"M8 x 24mm \/ 25","offer_id":57288026227069,"sku":"DIN6334-M8-25","price":8.72,"currency_code":"GBP","in_stock":true},{"title":"M8 x 24mm \/ 50","offer_id":57288026259837,"sku":"DIN6334-M8-50","price":12.97,"currency_code":"GBP","in_stock":true},{"title":"M8 x 24mm \/ 100","offer_id":57288026292605,"sku":"DIN6334-M8-100","price":18.1,"currency_code":"GBP","in_stock":true},{"title":"M10 x 30mm \/ 2","offer_id":57288026325373,"sku":"DIN6334-M10-2","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M10 x 30mm \/ 5","offer_id":57288026358141,"sku":"DIN6334-M10-5","price":7.72,"currency_code":"GBP","in_stock":false},{"title":"M10 x 30mm \/ 10","offer_id":57288026390909,"sku":"DIN6334-M10-10","price":8.6,"currency_code":"GBP","in_stock":false},{"title":"M10 x 30mm \/ 25","offer_id":57288026423677,"sku":"DIN6334-M10-25","price":13.47,"currency_code":"GBP","in_stock":false},{"title":"M10 x 30mm \/ 50","offer_id":57288026456445,"sku":"DIN6334-M10-50","price":18.97,"currency_code":"GBP","in_stock":false},{"title":"M10 x 30mm \/ 100","offer_id":57288026489213,"sku":"DIN6334-M10-100","price":28.47,"currency_code":"GBP","in_stock":false},{"title":"M12 x 36mm \/ 2","offer_id":57288026521981,"sku":"DIN6334-M12-2","price":6.85,"currency_code":"GBP","in_stock":true},{"title":"M12 x 36mm \/ 5","offer_id":57288026554749,"sku":"DIN6334-M12-5","price":7.97,"currency_code":"GBP","in_stock":true},{"title":"M12 x 36mm \/ 10","offer_id":57288026587517,"sku":"DIN6334-M12-10","price":9.22,"currency_code":"GBP","in_stock":true},{"title":"M12 x 36mm \/ 25","offer_id":57288026620285,"sku":"DIN6334-M12-25","price":15.97,"currency_code":"GBP","in_stock":true},{"title":"M12 x 36mm \/ 50","offer_id":57288026653053,"sku":"DIN6334-M12-50","price":22.35,"currency_code":"GBP","in_stock":true},{"title":"M12 x 36mm \/ 100","offer_id":57288026685821,"sku":"DIN6334-M12-100","price":34.97,"currency_code":"GBP","in_stock":true},{"title":"M14 x 42mm \/ 2","offer_id":57288026718589,"sku":"DIN6334-M14-2","price":7.1,"currency_code":"GBP","in_stock":true},{"title":"M14 x 42mm \/ 5","offer_id":57288026751357,"sku":"DIN6334-M14-5","price":8.72,"currency_code":"GBP","in_stock":true},{"title":"M14 x 42mm \/ 10","offer_id":57288026784125,"sku":"DIN6334-M14-10","price":12.85,"currency_code":"GBP","in_stock":true},{"title":"M14 x 42mm \/ 25","offer_id":57288026816893,"sku":"DIN6334-M14-25","price":19.97,"currency_code":"GBP","in_stock":true},{"title":"M14 x 42mm \/ 50","offer_id":57288026849661,"sku":"DIN6334-M14-50","price":32.23,"currency_code":"GBP","in_stock":false},{"title":"M14 x 42mm \/ 100","offer_id":57288026882429,"sku":"DIN6334-M14-100","price":57.99,"currency_code":"GBP","in_stock":false},{"title":"M16 x 48mm \/ 2","offer_id":57288026915197,"sku":"DIN6334-M16-2","price":7.85,"currency_code":"GBP","in_stock":true},{"title":"M16 x 48mm \/ 5","offer_id":57288026947965,"sku":"DIN6334-M16-5","price":10.6,"currency_code":"GBP","in_stock":true},{"title":"M16 x 48mm \/ 10","offer_id":57288026980733,"sku":"DIN6334-M16-10","price":17.47,"currency_code":"GBP","in_stock":true},{"title":"M16 x 48mm \/ 25","offer_id":57288027013501,"sku":"DIN6334-M16-25","price":29.22,"currency_code":"GBP","in_stock":true},{"title":"M16 x 48mm \/ 50","offer_id":57288027046269,"sku":"DIN6334-M16-50","price":48.72,"currency_code":"GBP","in_stock":false},{"title":"M16 x 48mm \/ 100","offer_id":57288027079037,"sku":"DIN6334-M16-100","price":87.97,"currency_code":"GBP","in_stock":false},{"title":"M20 x 60mm \/ 2","offer_id":57288027111805,"sku":"DIN6334-M20-2","price":10.35,"currency_code":"GBP","in_stock":false},{"title":"M20 x 60mm \/ 5","offer_id":57288027144573,"sku":"DIN6334-M20-5","price":14.22,"currency_code":"GBP","in_stock":false},{"title":"M20 x 60mm \/ 10","offer_id":57288027177341,"sku":"DIN6334-M20-10","price":20.72,"currency_code":"GBP","in_stock":false},{"title":"M20 x 60mm \/ 25","offer_id":57288027210109,"sku":"DIN6334-M20-25","price":37.22,"currency_code":"GBP","in_stock":false},{"title":"M20 x 60mm \/ 50","offer_id":57288027242877,"sku":"DIN6334-M20-50","price":64.72,"currency_code":"GBP","in_stock":false},{"title":"M20 x 60mm \/ 100","offer_id":57288027275645,"sku":"DIN6334-M20-100","price":119.85,"currency_code":"GBP","in_stock":false},{"title":"M24 x 72mm \/ 2","offer_id":57288027308413,"sku":"DIN6334-M24-2","price":12.22,"currency_code":"GBP","in_stock":true},{"title":"M24 x 72mm \/ 5","offer_id":57288027341181,"sku":"DIN6334-M24-5","price":20.35,"currency_code":"GBP","in_stock":true},{"title":"M24 x 72mm \/ 10","offer_id":57288027373949,"sku":"DIN6334-M24-10","price":30.97,"currency_code":"GBP","in_stock":true},{"title":"M24 x 72mm \/ 25","offer_id":57288027406717,"sku":"DIN6334-M24-25","price":62.97,"currency_code":"GBP","in_stock":false},{"title":"M24 x 72mm \/ 50","offer_id":57288027439485,"sku":"DIN6334-M24-50","price":116.22,"currency_code":"GBP","in_stock":false},{"title":"M24 x 72mm \/ 100","offer_id":57288027472253,"sku":"DIN6334-M24-100","price":229.47,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/0245\/6454\/files\/6334n.jpg?v=1789678614"},{"product_id":"flat-washers-din-125-form-a-zinc-plated-m3-m36","title":"Zinc Plated Flat Washers - DIN 125 Form A \/ ISO 7089 (M3 to M36)","description":"\u003cp\u003eOur zinc plated flat washers are manufactured to the dimensional requirements of DIN 125 Form A, the specification now superseded by the international standard ISO 7089. They provide a flat, wide bearing surface beneath the head of a bolt, screw or nut, spreading the clamping load evenly across the mating material and protecting it from surface damage, pull-through and stress concentration. Supplied in bright zinc plated carbon steel, they are stocked across the complete metric range from M3 up to M36, covering everything from light electronics and instrument work through to heavy structural and industrial fastenings.\u003c\/p\u003e\n\n\u003cp\u003eForm A washers are the standard, non-chamfered flat washer profile used throughout general engineering, construction and DIY assembly. The zinc plated finish gives useful protection against surface rust and corrosion, making these washers a cost-effective everyday choice. Every size is manufactured to the 200 HV hardness class defined in ISO 7089, giving a firm, non-deforming bearing surface that keeps its shape under load and is suitable for use with hexagon bolts, screws and nuts up to and including property class 8.8.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN 125 Form A \/ ISO 7089 compliant:\u003c\/strong\u003e Dimensions manufactured to the DIN 125 Form A specification and its superseding ISO 7089 standard, so fit and tolerances are consistent and predictable across every size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZinc plated steel construction:\u003c\/strong\u003e A durable carbon steel washer with a bright zinc plated finish, giving useful resistance to surface corrosion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e200 HV hardness class:\u003c\/strong\u003e Meets the standard 200 HV hardness rating for ISO 7089 washers, suitable for bolts, screws and nuts up to and including property class 8.8.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEven load distribution:\u003c\/strong\u003e The flat, wide bearing face spreads the clamping force of the fastener over a larger area, reducing point loading, surface marking and the risk of the joint working loose under vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete metric size range:\u003c\/strong\u003e Stocked from M3 through to M36, so the correct washer is available for small electrical and instrument fixings right up to heavy structural bolts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm A flat profile:\u003c\/strong\u003e A plain, non-chamfered washer for general-purpose use, giving a flush, even seat under the fastener head or nut.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications Table\u003c\/h3\u003e\n\u003cp\u003eThe table below lists the full dimensional specification for every stocked size, taken from the DIN 125 Form A \/ ISO 7089 standard. d1 is the inner (clearance hole) diameter, d2 is the outer diameter, and h is the washer thickness. Metric figures are in millimetres (mm); the final column gives the approximate nominal dimensions converted to inches (d1″ \/ d2″ \/ h″) for reference.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #ccc;padding:6px;text-align:left;\"\u003eSize\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:6px;text-align:left;\"\u003eInner Diameter d1 (mm, min\/max)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:6px;text-align:left;\"\u003eOuter Diameter d2 (mm, min\/max)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:6px;text-align:left;\"\u003eThickness h (mm, min–max)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:6px;text-align:left;\"\u003eApprox. Imperial (d1″ \/ d2″ \/ h″)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM3\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e3.20 \/ 3.38\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e6.64 \/ 7.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e0.45 – 0.55 (nom. 0.50)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e0.126″ \/ 0.276″ \/ 0.020″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM4\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e4.30 \/ 4.48\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e8.64 \/ 9.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e0.70 – 0.90 (nom. 0.80)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e0.169″ \/ 0.354″ \/ 0.031″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM5\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e5.30 \/ 5.48\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e9.64 \/ 10.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e0.90 – 1.10 (nom. 1.00)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e0.209″ \/ 0.394″ \/ 0.039″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM6\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e6.40 \/ 6.62\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e11.57 \/ 12.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e1.40 – 1.80 (nom. 1.60)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e0.252″ \/ 0.472″ \/ 0.063″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM8\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e8.40 \/ 8.62\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e15.57 \/ 16.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e1.40 – 1.80 (nom. 1.60)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e0.331″ \/ 0.630″ \/ 0.063″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM10\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e10.50 \/ 10.77\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e19.48 \/ 20.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e1.80 – 2.20 (nom. 2.00)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e0.413″ \/ 0.787″ \/ 0.079″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM12\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e13.00 \/ 13.27\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e23.48 \/ 24.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e2.30 – 2.70 (nom. 2.50)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e0.512″ \/ 0.945″ \/ 0.098″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM14\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e15.00 \/ 15.27\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e27.48 \/ 28.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e2.30 – 2.70 (nom. 2.50)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e0.591″ \/ 1.102″ \/ 0.098″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM16\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e17.00 \/ 17.27\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e29.48 \/ 30.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e2.70 – 3.30 (nom. 3.00)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e0.669″ \/ 1.181″ \/ 0.118″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM18\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e19.00 \/ 19.33\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e33.38 \/ 34.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e2.70 – 3.30 (nom. 3.00)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e0.748″ \/ 1.339″ \/ 0.118″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM20\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e21.00 \/ 21.33\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e36.38 \/ 37.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e2.70 – 3.30 (nom. 3.00)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e0.827″ \/ 1.457″ \/ 0.118″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM22\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e23.00 \/ 23.33\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e38.38 \/ 39.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e2.70 – 3.30 (nom. 3.00)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e0.906″ \/ 1.535″ \/ 0.118″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM24\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e25.00 \/ 25.33\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e43.38 \/ 44.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e3.70 – 4.30 (nom. 4.00)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e0.984″ \/ 1.732″ \/ 0.157″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM27\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e28.00 \/ 28.33\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e49.38 \/ 50.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e3.70 – 4.30 (nom. 4.00)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e1.102″ \/ 1.969″ \/ 0.157″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM30\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e31.00 \/ 31.39\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e55.26 \/ 56.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e3.70 – 4.30 (nom. 4.00)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e1.220″ \/ 2.205″ \/ 0.157″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM33\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e34.00 \/ 34.62\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e58.80 \/ 60.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e4.40 – 5.60 (nom. 5.00)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e1.339″ \/ 2.362″ \/ 0.197″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003eM36\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e37.00 \/ 37.62\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e64.80 \/ 66.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e4.40 – 5.60 (nom. 5.00)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px;\"\u003e1.457″ \/ 2.598″ \/ 0.197″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cem\u003eNote: ISO 7089 covers normal-series plain washers from M1.6 up to M64, so the M3–M36 range stocked here sits well within the scope of the standard. Tolerances shown are the standard min\/max figures for each dimension.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cp\u003eDIN 125 Form A \/ ISO 7089 flat washers are one of the most widely used fastener accessories, and are found wherever a bolted or screwed joint needs a flat, even bearing surface. Common uses include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGeneral engineering and machine assembly, where a consistent bearing surface protects components from marking and uneven load.\u003c\/li\u003e\n\u003cli\u003eAutomotive and workshop repairs, using the correct washer to match bolt and screw sizes on vehicles and equipment.\u003c\/li\u003e\n\u003cli\u003eConstruction and structural fixings, spreading clamping load across timber, steel or masonry surfaces.\u003c\/li\u003e\n\u003cli\u003eElectrical enclosures, cabinets and panel building, where smaller sizes (M3–M6) are used with fixing screws.\u003c\/li\u003e\n\u003cli\u003eFurniture assembly, shelving and general joinery.\u003c\/li\u003e\n\u003cli\u003eGeneral DIY, maintenance and repair tasks around the home, garage and workshop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe zinc plated finish suits workshop, garage, structural and general trade applications.\u003c\/p\u003e\n\n\u003ch3\u003eFitting Guidance\u003c\/h3\u003e\n\u003cp\u003eA few practical points help get the best performance and longest service life from a flat washer:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatch the washer to the fastener:\u003c\/strong\u003e Select the washer size that corresponds to the nominal thread diameter of the bolt or screw being used (for example, an M8 washer for an M8 bolt) so the clearance hole gives a close, accurate fit without excessive play.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition correctly in the joint:\u003c\/strong\u003e Fit the washer under the bolt head or nut, whichever is being torqued or rotated during tightening, so it can do its job of spreading load and protecting the surface as the joint is drawn up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck bolt grade compatibility:\u003c\/strong\u003e These 200 HV washers are suitable for use with hexagon bolts, screws and nuts up to and including property class 8.8.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvoid stacking washers:\u003c\/strong\u003e Use a single washer of the correct thickness rather than stacking multiple thinner washers, which can reduce joint stability and clamp force retention under vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMind mixed-metal contact:\u003c\/strong\u003e When fastening onto stainless steel, aluminium or other dissimilar metals in damp conditions, be aware that zinc plated steel can be prone to galvanic corrosion over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStore correctly:\u003c\/strong\u003e Keep washers dry between use to preserve the zinc plated finish, particularly for smaller sizes with thinner plating.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DIYUK","offers":[{"title":"M3 - 3mm \/ 2","offer_id":57780590969213,"sku":"DIN125-ZINC-M3-2","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M3 - 3mm \/ 10","offer_id":57780591001981,"sku":"DIN125-ZINC-M3-10","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M3 - 3mm \/ 50","offer_id":57780591034749,"sku":"DIN125-ZINC-M3-50","price":6.1,"currency_code":"GBP","in_stock":true},{"title":"M3 - 3mm \/ 100","offer_id":57780591067517,"sku":"DIN125-ZINC-M3-100","price":6.23,"currency_code":"GBP","in_stock":true},{"title":"M3 - 3mm \/ 200","offer_id":57780591100285,"sku":"DIN125-ZINC-M3-200","price":6.85,"currency_code":"GBP","in_stock":true},{"title":"M4 - 4mm \/ 2","offer_id":57780591133053,"sku":"DIN125-ZINC-M4-2","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M4 - 4mm \/ 10","offer_id":57780591165821,"sku":"DIN125-ZINC-M4-10","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M4 - 4mm \/ 50","offer_id":57780591198589,"sku":"DIN125-ZINC-M4-50","price":6.1,"currency_code":"GBP","in_stock":true},{"title":"M4 - 4mm \/ 100","offer_id":57780591231357,"sku":"DIN125-ZINC-M4-100","price":6.23,"currency_code":"GBP","in_stock":true},{"title":"M4 - 4mm \/ 200","offer_id":57780591264125,"sku":"DIN125-ZINC-M4-200","price":6.85,"currency_code":"GBP","in_stock":true},{"title":"M5 - 5mm \/ 2","offer_id":57780591296893,"sku":"DIN125-ZINC-M5-2","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M5 - 5mm \/ 10","offer_id":57780591329661,"sku":"DIN125-ZINC-M5-10","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M5 - 5mm \/ 50","offer_id":57780591362429,"sku":"DIN125-ZINC-M5-50","price":5.97,"currency_code":"GBP","in_stock":true},{"title":"M5 - 5mm \/ 100","offer_id":57780591395197,"sku":"DIN125-ZINC-M5-100","price":6.1,"currency_code":"GBP","in_stock":true},{"title":"M5 - 5mm \/ 200","offer_id":57780591427965,"sku":"DIN125-ZINC-M5-200","price":7.35,"currency_code":"GBP","in_stock":true},{"title":"M6 - 6mm \/ 2","offer_id":57780591460733,"sku":"DIN125-ZINC-M6-2","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M6 - 6mm \/ 10","offer_id":57780591493501,"sku":"DIN125-ZINC-M6-10","price":5.6,"currency_code":"GBP","in_stock":true},{"title":"M6 - 6mm \/ 50","offer_id":57780591526269,"sku":"DIN125-ZINC-M6-50","price":6.23,"currency_code":"GBP","in_stock":true},{"title":"M6 - 6mm \/ 100","offer_id":57780591559037,"sku":"DIN125-ZINC-M6-100","price":7.72,"currency_code":"GBP","in_stock":true},{"title":"M6 - 6mm \/ 200","offer_id":57780591591805,"sku":"DIN125-ZINC-M6-200","price":8.72,"currency_code":"GBP","in_stock":true},{"title":"M8 - 8mm \/ 2","offer_id":57780591624573,"sku":"DIN125-ZINC-M8-2","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M8 - 8mm \/ 10","offer_id":57780591657341,"sku":"DIN125-ZINC-M8-10","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M8 - 8mm \/ 50","offer_id":57780591690109,"sku":"DIN125-ZINC-M8-50","price":7.22,"currency_code":"GBP","in_stock":true},{"title":"M8 - 8mm \/ 100","offer_id":57780591722877,"sku":"DIN125-ZINC-M8-100","price":7.72,"currency_code":"GBP","in_stock":true},{"title":"M8 - 8mm \/ 200","offer_id":57780591755645,"sku":"DIN125-ZINC-M8-200","price":8.72,"currency_code":"GBP","in_stock":true},{"title":"M10 - 10mm \/ 2","offer_id":57780591788413,"sku":"DIN125-ZINC-M10-2","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M10 - 10mm \/ 10","offer_id":57780591821181,"sku":"DIN125-ZINC-M10-10","price":5.97,"currency_code":"GBP","in_stock":true},{"title":"M10 - 10mm \/ 50","offer_id":57780591853949,"sku":"DIN125-ZINC-M10-50","price":7.72,"currency_code":"GBP","in_stock":true},{"title":"M10 - 10mm \/ 100","offer_id":57780591886717,"sku":"DIN125-ZINC-M10-100","price":8.72,"currency_code":"GBP","in_stock":true},{"title":"M10 - 10mm \/ 200","offer_id":57780591919485,"sku":"DIN125-ZINC-M10-200","price":10.72,"currency_code":"GBP","in_stock":true},{"title":"M12 - 12mm \/ 2","offer_id":57780591952253,"sku":"DIN125-ZINC-M12-2","price":5.47,"currency_code":"GBP","in_stock":true},{"title":"M12 - 12mm \/ 10","offer_id":57780591985021,"sku":"DIN125-ZINC-M12-10","price":6.1,"currency_code":"GBP","in_stock":true},{"title":"M12 - 12mm \/ 50","offer_id":57780592017789,"sku":"DIN125-ZINC-M12-50","price":8.47,"currency_code":"GBP","in_stock":true},{"title":"M12 - 12mm \/ 100","offer_id":57780592050557,"sku":"DIN125-ZINC-M12-100","price":10.22,"currency_code":"GBP","in_stock":true},{"title":"M12 - 12mm \/ 200","offer_id":57780592083325,"sku":"DIN125-ZINC-M12-200","price":16.6,"currency_code":"GBP","in_stock":true},{"title":"M14 - 14mm \/ 2","offer_id":57780592116093,"sku":"DIN125-ZINC-M14-2","price":5.6,"currency_code":"GBP","in_stock":true},{"title":"M14 - 14mm \/ 10","offer_id":57780592148861,"sku":"DIN125-ZINC-M14-10","price":7.22,"currency_code":"GBP","in_stock":true},{"title":"M14 - 14mm \/ 50","offer_id":57780592181629,"sku":"DIN125-ZINC-M14-50","price":9.22,"currency_code":"GBP","in_stock":true},{"title":"M14 - 14mm \/ 100","offer_id":57780592214397,"sku":"DIN125-ZINC-M14-100","price":13.72,"currency_code":"GBP","in_stock":true},{"title":"M14 - 14mm \/ 200","offer_id":57780592247165,"sku":"DIN125-ZINC-M14-200","price":19.6,"currency_code":"GBP","in_stock":true},{"title":"M16 - 16mm \/ 2","offer_id":57780592279933,"sku":"DIN125-ZINC-M16-2","price":5.6,"currency_code":"GBP","in_stock":true},{"title":"M16 - 16mm \/ 10","offer_id":57780592312701,"sku":"DIN125-ZINC-M16-10","price":7.1,"currency_code":"GBP","in_stock":true},{"title":"M16 - 16mm \/ 50","offer_id":57780592345469,"sku":"DIN125-ZINC-M16-50","price":8.72,"currency_code":"GBP","in_stock":true},{"title":"M16 - 16mm \/ 100","offer_id":57780592378237,"sku":"DIN125-ZINC-M16-100","price":12.85,"currency_code":"GBP","in_stock":true},{"title":"M16 - 16mm \/ 200","offer_id":57780592411005,"sku":"DIN125-ZINC-M16-200","price":17.85,"currency_code":"GBP","in_stock":false},{"title":"M18 - 18mm \/ 2","offer_id":57780592443773,"sku":"DIN125-ZINC-M18-2","price":5.6,"currency_code":"GBP","in_stock":true},{"title":"M18 - 18mm \/ 10","offer_id":57780592476541,"sku":"DIN125-ZINC-M18-10","price":7.48,"currency_code":"GBP","in_stock":true},{"title":"M18 - 18mm \/ 50","offer_id":57780592509309,"sku":"DIN125-ZINC-M18-50","price":12.47,"currency_code":"GBP","in_stock":true},{"title":"M18 - 18mm \/ 100","offer_id":57780592542077,"sku":"DIN125-ZINC-M18-100","price":17.1,"currency_code":"GBP","in_stock":true},{"title":"M18 - 18mm \/ 200","offer_id":57780592574845,"sku":"DIN125-ZINC-M18-200","price":24.6,"currency_code":"GBP","in_stock":true},{"title":"M20 - 20mm \/ 2","offer_id":57780592607613,"sku":"DIN125-ZINC-M20-2","price":5.6,"currency_code":"GBP","in_stock":true},{"title":"M20 - 20mm \/ 10","offer_id":57780592640381,"sku":"DIN125-ZINC-M20-10","price":7.72,"currency_code":"GBP","in_stock":true},{"title":"M20 - 20mm \/ 50","offer_id":57780592673149,"sku":"DIN125-ZINC-M20-50","price":13.72,"currency_code":"GBP","in_stock":true},{"title":"M20 - 20mm \/ 100","offer_id":57780592705917,"sku":"DIN125-ZINC-M20-100","price":19.6,"currency_code":"GBP","in_stock":true},{"title":"M20 - 20mm \/ 200","offer_id":57780592738685,"sku":"DIN125-ZINC-M20-200","price":29.6,"currency_code":"GBP","in_stock":true},{"title":"M22 - 22mm \/ 2","offer_id":57780592771453,"sku":"DIN125-ZINC-M22-2","price":5.6,"currency_code":"GBP","in_stock":true},{"title":"M22 - 22mm \/ 10","offer_id":57780592804221,"sku":"DIN125-ZINC-M22-10","price":7.72,"currency_code":"GBP","in_stock":true},{"title":"M22 - 22mm \/ 50","offer_id":57780592836989,"sku":"DIN125-ZINC-M22-50","price":13.47,"currency_code":"GBP","in_stock":true},{"title":"M22 - 22mm \/ 100","offer_id":57780592869757,"sku":"DIN125-ZINC-M22-100","price":19.1,"currency_code":"GBP","in_stock":true},{"title":"M22 - 22mm \/ 200","offer_id":57780592902525,"sku":"DIN125-ZINC-M22-200","price":28.6,"currency_code":"GBP","in_stock":false},{"title":"M24 - 24mm \/ 2","offer_id":57780592935293,"sku":"DIN125-ZINC-M24-2","price":5.72,"currency_code":"GBP","in_stock":true},{"title":"M24 - 24mm \/ 10","offer_id":57780592968061,"sku":"DIN125-ZINC-M24-10","price":7.85,"currency_code":"GBP","in_stock":true},{"title":"M24 - 24mm \/ 50","offer_id":57780593000829,"sku":"DIN125-ZINC-M24-50","price":15.47,"currency_code":"GBP","in_stock":true},{"title":"M24 - 24mm \/ 100","offer_id":57780593033597,"sku":"DIN125-ZINC-M24-100","price":21.22,"currency_code":"GBP","in_stock":true},{"title":"M24 - 24mm \/ 200","offer_id":57780593066365,"sku":"DIN125-ZINC-M24-200","price":32.97,"currency_code":"GBP","in_stock":true},{"title":"M27 - 27mm \/ 2","offer_id":57780593099133,"sku":"DIN125-ZINC-M27-2","price":5.85,"currency_code":"GBP","in_stock":true},{"title":"M27 - 27mm \/ 10","offer_id":57780593131901,"sku":"DIN125-ZINC-M27-10","price":8.72,"currency_code":"GBP","in_stock":true},{"title":"M27 - 27mm \/ 50","offer_id":57780593164669,"sku":"DIN125-ZINC-M27-50","price":20.22,"currency_code":"GBP","in_stock":true},{"title":"M27 - 27mm \/ 100","offer_id":57780593197437,"sku":"DIN125-ZINC-M27-100","price":30.85,"currency_code":"GBP","in_stock":false},{"title":"M27 - 27mm \/ 200","offer_id":57780593230205,"sku":"DIN125-ZINC-M27-200","price":52.1,"currency_code":"GBP","in_stock":false},{"title":"M30 - 30mm \/ 2","offer_id":57780593262973,"sku":"DIN125-ZINC-M30-2","price":6.85,"currency_code":"GBP","in_stock":true},{"title":"M30 - 30mm \/ 10","offer_id":57780593295741,"sku":"DIN125-ZINC-M30-10","price":9.22,"currency_code":"GBP","in_stock":true},{"title":"M30 - 30mm \/ 50","offer_id":57780593328509,"sku":"DIN125-ZINC-M30-50","price":21.85,"currency_code":"GBP","in_stock":true},{"title":"M30 - 30mm \/ 100","offer_id":57780593361277,"sku":"DIN125-ZINC-M30-100","price":34.1,"currency_code":"GBP","in_stock":false},{"title":"M30 - 30mm \/ 200","offer_id":57780593394045,"sku":"DIN125-ZINC-M30-200","price":58.6,"currency_code":"GBP","in_stock":false},{"title":"M33 - 33mm \/ 2","offer_id":57780593426813,"sku":"DIN125-ZINC-M33-2","price":7.1,"currency_code":"GBP","in_stock":true},{"title":"M33 - 33mm \/ 10","offer_id":57780593459581,"sku":"DIN125-ZINC-M33-10","price":10.97,"currency_code":"GBP","in_stock":true},{"title":"M33 - 33mm \/ 50","offer_id":57780593492349,"sku":"DIN125-ZINC-M33-50","price":30.6,"currency_code":"GBP","in_stock":true},{"title":"M33 - 33mm \/ 100","offer_id":57780593525117,"sku":"DIN125-ZINC-M33-100","price":51.6,"currency_code":"GBP","in_stock":true},{"title":"M33 - 33mm \/ 200","offer_id":57780593557885,"sku":"DIN125-ZINC-M33-200","price":93.47,"currency_code":"GBP","in_stock":false},{"title":"M36 - 36mm \/ 2","offer_id":57780593590653,"sku":"DIN125-ZINC-M36-2","price":7.22,"currency_code":"GBP","in_stock":true},{"title":"M36 - 36mm \/ 10","offer_id":57780593623421,"sku":"DIN125-ZINC-M36-10","price":13.22,"currency_code":"GBP","in_stock":true},{"title":"M36 - 36mm \/ 50","offer_id":57780593656189,"sku":"DIN125-ZINC-M36-50","price":32.35,"currency_code":"GBP","in_stock":true},{"title":"M36 - 36mm \/ 100","offer_id":57780593688957,"sku":"DIN125-ZINC-M36-100","price":54.97,"currency_code":"GBP","in_stock":false},{"title":"M36 - 36mm \/ 200","offer_id":57780593721725,"sku":"DIN125-ZINC-M36-200","price":100.47,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/0245\/6454\/files\/DIN125ZINCMAIN_6e9045bc-2e9a-4c08-8e93-ae1cdff7e3b8.png?v=1770116077"},{"product_id":"premium-nyloc-lock-nuts-din-985-zinc-plated-steel","title":"DIYUK Nyloc Lock Nuts DIN 985, Zinc Plated Steel Hexagon Self-Locking with Nylon Insert, Anti-Vibration, M3-M24, Packs of 1-100","description":"\u003cp\u003e\u003cstrong\u003eZinc plated steel Nyloc lock nuts in 13 metric sizes from M3 to M24, manufactured to DIN 985 (equivalent to ISO 10511)\u003c\/strong\u003e, the standard for the low\/thin-type prevailing-torque hexagon nut. Instead of relying on thread deformation or a separate spring washer to hold position, each nut carries a nylon insert collar moulded into the top of the hex body. As the nut is run down the bolt, the nylon ring grips the thread crest just before the metal thread takes over fully, creating a continuous prevailing-torque lock that resists loosening under vibration, repeated movement, and thermal cycling.\u003c\/p\u003e\n\u003cp\u003eThe hexagon body itself is zinc-plated steel, giving reliable general-purpose corrosion resistance for both indoor and outdoor fixing work. Because the nylon insert does the gripping, the insert provides a permanent thread lock while still allowing disassembly. This makes Nyloc nuts a practical choice wherever a fixing may need to be checked, adjusted, or serviced over its life rather than fitted once and left permanently undisturbed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured to DIN 985 (equivalent to ISO 10511), the standard for low\/thin-type prevailing-torque hexagon lock nuts\u003c\/li\u003e\n\u003cli\u003eZinc-plated steel hexagon body for general-purpose corrosion resistance, suitable for indoor and outdoor fixings\u003c\/li\u003e\n\u003cli\u003eIntegral nylon insert collar creates a prevailing-torque lock that resists loosening from vibration and repeated movement, without needing a separate lock washer\u003c\/li\u003e\n\u003cli\u003eReliable protection against spontaneous loosening without the need for additional spring washers or thread-locking compounds, even under dynamic loads and shocks\u003c\/li\u003e\n\u003cli\u003eCompliance with DIN 985 \/ ISO 10511 gives dimensional repeatability and full interchangeability\u003c\/li\u003e\n\u003cli\u003ePolyamide (nylon) insert provides a permanent thread lock while still allowing disassembly for maintenance or adjustment\u003c\/li\u003e\n\u003cli\u003eISO metric coarse-pitch thread throughout the range\u003c\/li\u003e\n\u003cli\u003eInstallation with a standard open-end spanner or socket: no special tools required (spanner size for each thread in the table below)\u003c\/li\u003e\n\u003cli\u003eDependable performance under dynamic loads, shocks and varying temperatures\u003c\/li\u003e\n\u003cli\u003eSupplied in 13 thread sizes from M3 to M24 for mechanical engineering, automotive, construction and electronics fixings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eThread size\u003c\/th\u003e\n\u003cth\u003eThread pitch\u003c\/th\u003e\n\u003cth\u003eWidth across flats (spanner size)\u003c\/th\u003e\n\u003cth\u003eWidth across corners\u003c\/th\u003e\n\u003cth\u003eNut height (incl. nylon insert)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003e0.5mm (0.02in)\u003c\/td\u003e\n\u003ctd\u003e5.5mm (0.22in)\u003c\/td\u003e\n\u003ctd\u003e6.01mm (0.24in)\u003c\/td\u003e\n\u003ctd\u003e3.7–4mm (0.15–0.16in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e0.7mm (0.03in)\u003c\/td\u003e\n\u003ctd\u003e7mm (0.28in)\u003c\/td\u003e\n\u003ctd\u003e7.66mm (0.30in)\u003c\/td\u003e\n\u003ctd\u003e4.7–5mm (0.19–0.20in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e0.8mm (0.03in)\u003c\/td\u003e\n\u003ctd\u003e8mm (0.31in)\u003c\/td\u003e\n\u003ctd\u003e8.79mm (0.35in)\u003c\/td\u003e\n\u003ctd\u003e4.7–5mm (0.19–0.20in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e1.0mm (0.04in)\u003c\/td\u003e\n\u003ctd\u003e10mm (0.39in)\u003c\/td\u003e\n\u003ctd\u003e11.05mm (0.44in)\u003c\/td\u003e\n\u003ctd\u003e5.7–6mm (0.22–0.24in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e1.25mm (0.05in)\u003c\/td\u003e\n\u003ctd\u003e13mm (0.51in)\u003c\/td\u003e\n\u003ctd\u003e14.38mm (0.57in)\u003c\/td\u003e\n\u003ctd\u003e7.64–8mm (0.30–0.31in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e1.5mm (0.06in)\u003c\/td\u003e\n\u003ctd\u003e17mm (0.67in)\u003c\/td\u003e\n\u003ctd\u003e18.9mm (0.74in)\u003c\/td\u003e\n\u003ctd\u003e9.64–10mm (0.38–0.39in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e1.75mm (0.07in)\u003c\/td\u003e\n\u003ctd\u003e19mm (0.75in)\u003c\/td\u003e\n\u003ctd\u003e21.1mm (0.83in)\u003c\/td\u003e\n\u003ctd\u003e11.57–12mm (0.46–0.47in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM14\u003c\/td\u003e\n\u003ctd\u003e2.0mm (0.08in)\u003c\/td\u003e\n\u003ctd\u003e22mm (0.87in)\u003c\/td\u003e\n\u003ctd\u003e24.49mm (0.96in)\u003c\/td\u003e\n\u003ctd\u003e13.3–14mm (0.52–0.55in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e2.0mm (0.08in)\u003c\/td\u003e\n\u003ctd\u003e24mm (0.94in)\u003c\/td\u003e\n\u003ctd\u003e26.75mm (1.05in)\u003c\/td\u003e\n\u003ctd\u003e15.3–16mm (0.60–0.63in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM18\u003c\/td\u003e\n\u003ctd\u003e2.5mm (0.10in)\u003c\/td\u003e\n\u003ctd\u003e27mm (1.06in)\u003c\/td\u003e\n\u003ctd\u003e29.56mm (1.16in)\u003c\/td\u003e\n\u003ctd\u003e17.66–18.5mm (0.70–0.73in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003ctd\u003e2.5mm (0.10in)\u003c\/td\u003e\n\u003ctd\u003e30mm (1.18in)\u003c\/td\u003e\n\u003ctd\u003e32.95mm (1.30in)\u003c\/td\u003e\n\u003ctd\u003e18.7–20mm (0.74–0.79in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM22\u003c\/td\u003e\n\u003ctd\u003e2.5mm (0.10in)\u003c\/td\u003e\n\u003ctd\u003e32mm (1.26in)\u003c\/td\u003e\n\u003ctd\u003e35.03mm (1.38in)\u003c\/td\u003e\n\u003ctd\u003e20.7–22mm (0.81–0.87in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM24\u003c\/td\u003e\n\u003ctd\u003e3.0mm (0.12in)\u003c\/td\u003e\n\u003ctd\u003e36mm (1.42in)\u003c\/td\u003e\n\u003ctd\u003e39.55mm (1.56in)\u003c\/td\u003e\n\u003ctd\u003e22.7–24mm (0.89–0.94in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eDimensions per the DIN 985 standard (low\/thin-type prevailing-torque hexagon nut), taken from published DIN 985 fastener specification tables. Nut height is the overall height including the nylon insert collar; the width across flats is the correct spanner or socket size for that thread.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBecause the nylon insert locks the nut in place independently of torque alone, these Nyloc nuts suit any fixing where vibration, repeated movement, or thermal cycling could otherwise work a plain hexagon nut loose over time. Typical uses include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMechanical engineering and machine construction, industrial installations and production lines\u003c\/li\u003e\n\u003cli\u003eHousehold appliances and electronics\u003c\/li\u003e\n\u003cli\u003eAutomotive and machinery assembly, where engine, chassis, and moving-part vibration is a constant factor\u003c\/li\u003e\n\u003cli\u003eGeneral construction and steel fabrication, securing structural brackets, frames, and fixings that need to hold their setting over time\u003c\/li\u003e\n\u003cli\u003eElectrical enclosures and control panels, where equipment vibration and thermal cycling from heat-generating components can loosen standard fixings\u003c\/li\u003e\n\u003cli\u003eHVAC and pipework brackets, where the running vibration of fans, compressors, and pumps is transmitted through the mounting\u003c\/li\u003e\n\u003cli\u003eRacking, shelving, and storage system assembly, particularly on joints that may be loaded and unloaded repeatedly\u003c\/li\u003e\n\u003cli\u003eDIY and furniture assembly, wherever a reliable lock nut is preferred over a plain nut and separate lock washer\u003c\/li\u003e\n\u003cli\u003eAny fixing that may need to be periodically removed for maintenance or adjustment, since the polyamide insert provides a permanent thread lock while still allowing disassembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Guidance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the nut to the corresponding metric bolt or threaded rod, using the width across flats in the table above to identify the correct spanner or socket size. Start the nut by hand where possible to keep it running straight and avoid cross-threading, then run it down using a spanner, ratchet, or socket, with the nylon collar facing outward so it is the last part to engage the thread. You will feel increased resistance as the nylon insert grips the thread crest – this is the prevailing-torque lock taking effect, and is normal. Keep turning until the nut draws up tight against the joint face. For structural or safety-critical joints, tighten to the torque specification appropriate to the bolt size and property class rather than judging by feel alone.\u003c\/p\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich size do I need?\u003c\/strong\u003e\u003cbr\u003eMatch the nut to the thread size of your bolt or threaded rod, for example an M10 nut for an M10 bolt. The width across flats in the table above gives the spanner or socket size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich way round does the nut go?\u003c\/strong\u003e\u003cbr\u003eWith the nylon collar facing outward, so it is the last part to engage the thread. You will feel increased resistance as the nylon insert grips the thread: this is the lock taking effect.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a spring washer as well?\u003c\/strong\u003e\u003cbr\u003eNo. The nylon insert protects against spontaneous loosening without the need for additional spring washers or thread-locking compounds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the nut be removed?\u003c\/strong\u003e\u003cbr\u003eYes. The polyamide insert provides a permanent thread lock while still allowing disassembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat pack sizes are available?\u003c\/strong\u003e\u003cbr\u003ePacks of 2, 4, 10, 25, 50 or 100 nuts; M22 comes in packs of 1, 2, 4, 25, 50 or 100.\u003c\/p\u003e","brand":"DIYUK","offers":[{"title":"M3 \/ 2","offer_id":57780643758461,"sku":"NYLOC-ZINC-M3-2","price":5.22,"currency_code":"GBP","in_stock":true},{"title":"M3 \/ 4","offer_id":57780643791229,"sku":"NYLOC-ZINC-M3-4","price":5.22,"currency_code":"GBP","in_stock":true},{"title":"M3 \/ 10","offer_id":58653053387133,"sku":"NYLOC-ZINC-M3-10","price":5.22,"currency_code":"GBP","in_stock":true},{"title":"M3 \/ 25","offer_id":57780643823997,"sku":"NYLOC-ZINC-M3-25","price":5.35,"currency_code":"GBP","in_stock":true},{"title":"M3 \/ 50","offer_id":57780643856765,"sku":"NYLOC-ZINC-M3-50","price":5.6,"currency_code":"GBP","in_stock":true},{"title":"M3 \/ 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