S-93925A250 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
• Excellent corrosion resistance provided by 18-8 stainless steel construction, ensuring longevity in harsh environments
• Precision dimensional compliance with DIN 6797 standards for reliable fit and consistent performance in M4 applications
• Optimized tooth engagement with internal tooth location design for maximum locking force transmission
• Environmental compliance assurance with RoHS 3 and REACH regulations, meeting international safety standards
• Durable material performance maintaining structural integrity across temperature variations and mechanical stress
• Metric system compatibility for seamless integration with international engineering specifications and designs

Professional Applications & Engineering Value

This M4 internal tooth lock washer delivers critical vibration-resistant fastening solutions for demanding industrial applications where secure locking performance is non-negotiable. Manufactured from 18-8 stainless steel, it provides exceptional corrosion resistance for machinery exposed to moisture, chemicals, or outdoor elements. The internal tooth configuration ensures positive locking action by biting into both the bearing surface and fastener head, effectively preventing rotational loosening caused by vibration or thermal cycling. This DIN 6797 compliant washer is particularly valuable in automotive assemblies, electrical enclosures, precision instruments, and industrial equipment where reliable fastening under dynamic conditions is essential for operational safety and reduced maintenance intervals.

Specification Summary & Compliance

This precision tooth lock washer features 4.3mm internal diameter, 8mm outer diameter, and 0.4-0.6mm thickness range, engineered to DIN 6797 dimensional standards for M4 screw applications. The manufacturing process adheres to strict quality controls ensuring consistent tooth geometry and material properties. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental safety and restricted substance adherence. The 18-8 stainless steel composition provides reliable performance while meeting international fastener specifications for industrial use.