S-90391A133 100 mm ID x 142 mm OD DIN 5406 Spring Lock Washers for Slotted Bearing Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through conical spring design that maintains constant tension under dynamic loads
• Enhanced locking security with external teeth that bite into mating surfaces, preventing loosening
• Precision compatibility with M100 screws and DIN 981 bearing nuts for seamless industrial integration
• Chamfered bearing nut face ensures smooth installation and reduces assembly time
• Robust steel construction provides reliable performance in demanding industrial environments
• Full regulatory compliance with RoHS 3 and REACH standards for environmental safety
• Optimized metric dimensions (100mm ID, 142mm OD) for precise fit in heavy-duty applications

Professional Applications & Engineering Value

This M100 DIN 5406 spring lock washer delivers exceptional engineering value in applications where vibration-induced loosening compromises safety and performance. The conical shape with external teeth creates multiple biting points that dig into both the bearing surface and nut face, maintaining clamping force under extreme conditions. Manufactured from high-quality steel, this metric washer is engineered to withstand heavy machinery vibrations, thermal cycling, and dynamic loads common in industrial equipment, construction machinery, and transportation systems. The external tooth configuration provides superior resistance to rotational movement compared to standard washers, making it ideal for critical fastening applications where reliability is paramount. Compatible with DIN 981 bearing nuts, this washer ensures secure fastening in high-vibration environments while meeting stringent industrial standards.

Specification Summary & Compliance

This precision spring lock washer conforms to DIN 5406 standards with metric dimensions including 100mm inner diameter, 142mm outer diameter, and 1.750mm thickness. The external tooth location and conical shape provide optimal locking performance when used with M100 screws and chamfered bearing nuts meeting DIN 981 specifications. The washer is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial applications while maintaining the highest quality standards for professional fastening solutions.