S-95060A450 21 mm ID x 33 mm OD DIN 6797 External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through external teeth that bite into mating surfaces, preventing fastener loosening under dynamic loads
• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise dimensional compatibility with 21mm ID perfectly matching M20 screw sizes for optimal fit and performance
• Reliable torque retention through hardened external teeth that maintain clamping force in high-vibration applications
• Standardized quality assurance with full compliance to DIN 6797 specifications for consistent performance
• Environmental compliance meeting RoHS 3 and REACH regulations for safe use across regulated industries
• Optimized load distribution with 33mm OD providing enhanced surface contact area for improved joint integrity

Professional Applications & Engineering Value

This M20 external tooth lock washer delivers critical vibration resistance in demanding industrial applications where fastener security is paramount. Manufactured from 18-8 stainless steel, the washer provides excellent corrosion resistance for outdoor equipment, marine applications, and chemical processing environments. The external tooth configuration ensures positive locking action by embedding teeth into both the fastener head and mating surface, creating mechanical interference that prevents rotational loosening. This design is particularly valuable in heavy machinery, automotive assemblies, and structural frameworks where vibration-induced failure can compromise safety. The DIN 6797 compliance guarantees dimensional accuracy and mechanical properties that meet rigorous European engineering standards, providing engineers with reliable performance data for critical design calculations.

Specification Summary & Compliance

This external tooth lock washer features precise dimensions of 21mm internal diameter, 33mm external diameter, and 1.2-1.6mm thickness, engineered to DIN 6797 standards for dimensional accuracy and mechanical performance. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance across international markets. Manufactured from 18-8 stainless steel, the washer provides consistent material properties and corrosion resistance suitable for industrial applications requiring long-term reliability and chemical resistance.