S-90407A118 20 mm ID x 36 mm OD DIN 462 Spring Lock Washers for Slotted Bearing Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through conical spring design prevents fastener loosening in high-stress applications
• Precise M20 screw compatibility with 20mm ID ensures perfect fit and reliable performance
• DIN 462 compliance guarantees consistent quality and dimensional accuracy for industrial applications
• Stepped bearing nut face style provides enhanced load distribution and seating stability
• Environmental compliance assurance with RoHS 3 and REACH certification for safe industrial use
• Durable steel construction offers excellent strength and corrosion resistance in demanding environments
• Optimized conical geometry (36mm OD, 4mm height) delivers maximum spring action and tension maintenance

Professional Applications & Engineering Value

This M20 spring lock washer delivers critical engineering solutions for vibration-prone industrial environments. The conical steel construction creates continuous spring tension that compensates for thermal expansion, material relaxation, and dynamic loads - effectively preventing catastrophic fastener failure in machinery, automotive assemblies, and structural applications. Engineered to DIN 462 specifications with a stepped bearing nut face, this washer ensures uniform pressure distribution across mating surfaces, reducing stress concentrations that lead to material fatigue. The metric dimensions (20mm ID, 36mm OD) provide precise compatibility with M20 fasteners while the conical shape offers superior deflection characteristics compared to flat washers, making it ideal for high-vibration equipment, power transmission systems, and heavy machinery where reliable locking action is paramount.

Specification Summary & Compliance

This spring lock washer meets DIN 462 standards for dimensional accuracy and performance requirements, with precise metric measurements including 20mm internal diameter, 36mm outer diameter, and 1mm thickness. The washer is manufactured to complement DIN 1804 bearing nuts with stepped face style compatibility. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and restricted substance adherence. The steel material provides consistent mechanical properties while the conical spring lock washer shape delivers reliable vibration resistance for industrial fastening systems.