S-93925A419 4.3 mm ID x 8 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, preventing loosening under dynamic loads
• Enhanced corrosion protection through zinc-plated steel construction for extended service life in industrial environments
• Precision M4 compatibility with 4.3mm ID ensuring perfect fit and consistent clamping force for M4 fasteners
• Optimized load distribution with 8mm OD design that spreads pressure evenly across connected components
• Exceptional mechanical strength from Rockwell C42 hardness rating that maintains tooth integrity under high stress
• Reliable compliance assurance meeting DIN 6797 standards for consistent performance in demanding applications
• Environmental responsibility with RoHS 3 and REACH compliance for safe use across regulated industries

Professional Applications & Engineering Value

This M4 internal tooth lock washer delivers critical vibration-resistant performance for industrial assemblies where dynamic loads threaten fastener integrity. The zinc-plated steel construction provides essential corrosion protection in manufacturing environments, while the precisely engineered internal tooth configuration creates positive locking action that prevents rotational loosening. Engineered to DIN 6797 standards, these washers maintain consistent performance in automotive subassemblies, machinery frames, and electrical enclosures where thermal cycling and operational vibrations compromise standard fastening solutions. The Rockwell C42 hardness ensures teeth maintain their biting capability through repeated disassembly cycles, making them ideal for maintenance-intensive equipment requiring reliable, reusable locking protection.

Specification Summary & Compliance

This precision internal tooth lock washer features 4.3mm internal diameter and 8mm outer diameter with thickness ranging 0.4-0.6mm, engineered for M4 screw applications. Manufactured to DIN 6797 specifications with dimensional tolerances ensuring consistent performance. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current substance restriction requirements for industrial applications worldwide.