S-97985A740 5.3 mm ID x 10 mm OD DIN 6798 External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through external tooth design that bites into mating surfaces, preventing fastener loosening under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction, extending service life in demanding industrial environments
• Precise M5 screw compatibility with 5.3mm internal diameter ensuring perfect fit and optimal locking performance
• Durable mechanical properties with Rockwell C35 hardness providing reliable spring action and long-term fastener retention
• Standardized dimensional accuracy per DIN 6798 specifications guaranteeing consistent performance and interchangeability
• Regulatory compliance assurance meeting RoHS 3 and REACH requirements for safe use across various industries
• Optimized load distribution with 10mm outer diameter spreading pressure evenly across connected surfaces

Professional Applications & Engineering Value

This M5 external tooth lock washer delivers critical vibration-resistant fastening solutions for industrial applications where dynamic loads and equipment movement threaten joint integrity. The zinc-plated steel construction provides essential corrosion resistance while maintaining the spring tension necessary for effective locking action. Engineered to DIN 6798 standards, these washers feature precisely positioned external teeth that create multiple biting points into both the fastener and workpiece, distributing locking forces evenly around the circumference. This design prevents rotational slippage and maintains clamp load in high-vibration environments such as machinery, automotive assemblies, and electrical enclosures. The combination of Rockwell C35 hardness and standardized metric dimensions ensures reliable performance in repetitive disassembly and reassembly scenarios common in maintenance operations.

Specification Summary & Compliance

Manufactured to DIN 6798 specifications with precise dimensional tolerances including 5.3mm internal diameter, 10mm external diameter, and 0.6-0.7mm thickness for perfect M5 screw compatibility. The zinc-plated steel material provides consistent mechanical properties with Rockwell C35 hardness. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and unrestricted industrial use across international markets.