S-93925A412 7.4 mm ID x 12.5 mm OD DIN 6797 Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with internal teeth that bite into mating surfaces to prevent loosening under dynamic loads
• Exceptional corrosion resistance from 18-8 stainless steel construction for long-term reliability in harsh environments
• Precision dimensional control with 7.4mm ID and 12.5mm OD ensuring perfect fit for M7 fasteners
• Guaranteed compliance with DIN 6797 manufacturing standards for consistent performance and interchangeability
• Environmental responsibility through RoHS 3 and REACH compliance, meeting strict international regulations
• Optimized thickness range (0.7-0.9mm) providing ideal spring action while maintaining low profile design
• Internal tooth configuration that protects mating surfaces from damage while maximizing locking effectiveness

Professional Applications & Engineering Value

This M7 internal tooth lock washer delivers critical vibration-resistant fastening solutions for demanding industrial applications. Engineered from 18-8 stainless steel, it provides excellent corrosion resistance in chemical processing, marine, and outdoor equipment where environmental factors would degrade ordinary fasteners. The internal tooth design according to DIN 6797 standards ensures positive locking action without damaging visible surfaces, making it ideal for automotive assemblies, machinery frames, and electrical enclosures where both security and aesthetics matter. The precise 7.4mm internal diameter and 12.5mm outer diameter guarantee proper seating on M7 fasteners, eliminating play while the controlled thickness maintains consistent spring tension across temperature variations and load cycles.

Specification Summary & Compliance

Manufactured to DIN 6797 specifications with internal tooth configuration, this washer features precise dimensional tolerances including 7.4mm internal diameter and 12.5mm outer diameter with thickness ranging 0.7-0.9mm. The component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for international industrial applications. Constructed from corrosion-resistant 18-8 stainless steel, it maintains performance integrity across diverse operating conditions while providing reliable locking action for M7 fastener systems.