S-90391A138 125 mm ID x 170 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 rotation and loosening
• Optimal chamfered nut compatibility designed specifically for DIN 981 bearing nuts, ensuring perfect fit and load distribution
• Precision metric dimensions (125mm ID × 170mm OD × 2mm thickness) providing exact fit for M125 screw applications
• Durable steel construction delivering reliable performance in demanding industrial environments
• Full regulatory compliance with RoHS 3 and REACH standards for safe, environmentally responsible manufacturing
• Standardized engineering meeting DIN 5406 specifications for consistent quality and interchangeability

Professional Applications & Engineering Value

This M125 Spring Lock Washer delivers critical vibration resistance in heavy-duty mechanical assemblies where constant motion and dynamic loads challenge fastener integrity. The conical spring design creates continuous axial pressure that compensates for material relaxation and thermal expansion, while the external tooth configuration provides immediate bite into both the bearing surface and nut face. Manufactured from high-grade steel and engineered to DIN 5406 standards, this washer solves common industrial problems including joint loosening, fatigue failure, and maintenance downtime. The chamfered nut compatibility ensures optimal load transfer in applications ranging from heavy machinery and industrial equipment to construction and transportation systems where reliable locking performance is non-negotiable.

Specification Summary & Compliance

This spring lock washer features precision dimensions of 125mm internal diameter, 170mm outer diameter, and 2.0mm thickness with 7mm overall height and 14mm tab width. Manufactured to DIN 5406 specifications with external tooth location and conical shape, it provides reliable locking performance for M125 screw applications. The washer is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety. Compatible with DIN 981 chamfered bearing nuts for optimal assembly performance in industrial and mechanical applications.