S-90391A131 90 mm ID x 126 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 anti-loosening performance with external teeth that bite into mating surfaces for secure fastening
• Precise DIN 5406 compliance ensures dimensional accuracy and reliable performance in demanding applications
• Optimized chamfered bearing nut interface reduces stress concentration and prevents galling during installation
• Robust steel construction provides excellent durability and corrosion resistance in industrial environments
• DIN 981 compatibility guarantees proper fit with standard bearing nuts for simplified assembly
• Environmental compliance with RoHS 3 and REACH regulations for safe usage across global markets

Professional Applications & Engineering Value

This M90 metric spring lock washer delivers exceptional engineering value in high-vibration environments where fastener security is critical. The conical shape with external teeth creates multiple biting edges that dig into both the bearing surface and nut face, effectively preventing rotational loosening under cyclic loads. Manufactured from high-grade steel with precise 90mm ID and 126mm OD dimensions, this washer maintains consistent spring action while the chamfered bearing nut face style ensures smooth installation without damaging contact surfaces. Ideal for heavy machinery, industrial equipment, and automotive applications, these DIN 5406 compliant washers provide reliable performance where standard flat washers fail, significantly extending maintenance intervals and reducing downtime in demanding operational conditions.

Specification Summary & Compliance

This spring lock washer features precise metric dimensions (90mm ID × 126mm OD × 1.75mm thickness) with external tooth configuration and 6mm overall height. Manufactured in compliance with DIN 5406 standards for dimensional accuracy and performance requirements. The washer is compatible with DIN 981 bearing nuts and features a chamfered face style for optimal nut engagement. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, ensuring regulatory adherence for international industrial applications.