S-93925A340 21 mm ID x 33 mm OD DIN 6797 Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through internal tooth design that bites into mating surfaces, preventing fastener loosening in high-stress applications
• Excellent corrosion resistance provided by 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• Precision dimensional accuracy with 21mm ID and 33mm OD for perfect fit with M20 fasteners, reducing installation time and errors
• Standardized compliance with DIN 6797 specifications guarantees consistent performance and interchangeability across industrial applications
• Environmental responsibility through RoHS 3 and REACH compliance, meeting strict international regulatory requirements
• Optimized thickness range (1.2-1.5mm) provides ideal balance between locking force and space constraints in compact assemblies
• Internal tooth location ensures concentrated locking force directly on the fastener, enhancing security without damaging external surfaces

Professional Applications & Engineering Value

This M20 internal tooth lock washer delivers exceptional engineering value in applications where vibration-induced loosening compromises assembly integrity. Manufactured from 18-8 stainless steel, it provides reliable corrosion resistance for outdoor equipment, marine applications, and chemical processing environments where moisture and corrosive elements are present. The internal tooth configuration according to DIN 6797 standards creates multiple biting points that securely lock fasteners in position, eliminating the need for additional locking mechanisms. This precision metric lock washer is particularly valuable in automotive assemblies, machinery manufacturing, and structural frameworks where consistent clamping force must be maintained despite dynamic loads and thermal cycling. The combination of material durability and engineered tooth design addresses the critical industrial challenge of maintaining joint integrity while reducing maintenance frequency and downtime.

Specification Summary & Compliance

This internal tooth lock washer features precise dimensional specifications with 21mm internal diameter, 33mm outer diameter, and 1.2-1.5mm thickness range, engineered for optimal performance with M20 fasteners. Manufactured in compliance with DIN 6797 standards, ensuring dimensional accuracy and mechanical properties meet rigorous German industrial specifications. The product demonstrates full compliance with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations concerning chemical safety, making it suitable for global supply chains and environmentally conscious manufacturing operations.