Serrated Flange Nuts DIN 6923 - A2 Stainless Steel Locking Nuts

Secure your projects with the ultimate vibration-resistant fastener. Our Serrated Flange Lock Nuts, manufactured from premium A2 stainless steel to the precise DIN 6923 standard, offer a superior, single-component solution for any application where connections must not fail.

These advanced nuts are engineered with a built-in serrated flange that acts as both a washer and a powerful locking mechanism. As you tighten the nut, the serrations bite into the mating surface, creating a mechanical grip that prevents loosening caused by vibration, torque, and dynamic loads. The wide flange distributes pressure evenly, protecting surfaces from damage and allowing you to span oversized or imperfect holes.

Ideal for professionals and DIY enthusiasts alike, these nuts eliminate the need for separate lock washers and flat washers, speeding up assembly, reducing your part count, and preventing installation errors.

Key Features & Benefits:

• Vibration-Proof Locking Action: Angled serrations grip the surface to create a secure lock that resists loosening, making them perfect for engines, machinery, automotive applications, and equipment.

• Integrated Washer Flange: The wide flange distributes clamping load to prevent damage to the fastening surface and can span oversized holes, eliminating the need for a separate washer.

• Superior A2 Stainless Steel: Made from A2 (Type 304 / 18-8) stainless steel, offering excellent corrosion and rust resistance for long-lasting performance in outdoor, automotive, and wet environments (not suitable for marine/saltwater use).

• Professional Grade Standard: Manufactured to the precise DIN 6923 specification, ensuring dimensional accuracy, reliability, and interchangeability for all your projects.

• Simplified & Faster Assembly: The one-piece design saves time, reduces inventory, and simplifies your projects by removing the need for extra washers.

Common Applications:

Whether you are a seasoned professional or a dedicated DIYer, our serrated flange nuts are the perfect choice for a huge range of demanding applications:

• Automotive & Motorsport: Securing exhaust components, engine mounts, suspension parts, and body panels that are subject to constant vibration.

• Machinery & Industrial Equipment: Fastening guards, motors, pumps, and structural frames on workshop tools and industrial machinery.

• Construction & Outdoor Projects: Assembling decking frames, garden furniture, children's playsets, and any structure where a secure, weather-resistant fixing is critical.

• General Repairs & Fabrication: An essential upgrade for any bolted joint that is prone to loosening over time, from lawnmowers to electronic enclosures.

Installation Note: For the locking mechanism to be effective, the serrations must make direct contact with the mating surface. Do not use a separate washer underneath these nuts. The serrations may mark the surface finish, which is part of their locking function.

 Technical Specifications Table