S-95795A118 12.5 mm ID x 30 mm OD Internal / External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through dual internal and external teeth that create multiple locking points
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in demanding environments
• Precise M12 compatibility with 12.5mm internal diameter ensuring perfect fit for standard metric fasteners
• Optimal load distribution with 30mm outer diameter providing wider surface contact area
• Reliable locking performance maintained across 3.200mm-4.000mm thickness range for consistent clamping force
• Dual-direction security with teeth positioned both internally and externally to prevent loosening from either direction
• Global compliance assurance meeting RoHS 3 and REACH environmental standards for international projects

Professional Applications & Engineering Value

This M12 metric tooth lock washer delivers critical vibration resistance in high-stress industrial applications where fastener security is paramount. The zinc-plated steel construction provides essential corrosion protection while maintaining structural integrity under dynamic loads. The unique internal and external teeth configuration creates bidirectional locking action, effectively preventing both rotational and axial movement in machinery, automotive assemblies, and heavy equipment. This dual-tooth design addresses the common failure point of standard washers in applications subject to constant vibration, thermal cycling, or impact forces. Engineered specifically for M12 fastener systems, this washer ensures reliable performance in critical joints where maintenance access is limited and failure consequences are significant.

Specification Summary & Compliance

Manufactured to metric dimensional standards with precise 12.5mm internal diameter and 30mm outer diameter. The tooth lock washer features both internal and external tooth configurations for maximum locking effectiveness. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance. The zinc-plated steel construction provides consistent performance across the specified 3.200mm-4.000mm thickness range, maintaining reliable clamping force in industrial fastener applications.