S-91120A140 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 teeth that bite into mating surfaces, preventing loosening under dynamic loads
• Excellent corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise M5 screw compatibility with 5.3mm internal diameter ensuring perfect fit and optimal locking performance
• Reliable DIN 6798 compliance guaranteeing consistent quality and dimensional accuracy for engineering applications
• Enhanced electrical conductivity between components through tooth contact, improving grounding in electrical assemblies
• Environmental regulation compliance with RoHS 3 and REACH standards for safe, sustainable industrial use
• Space-efficient design with 10mm OD and 0.5-0.7mm thickness, suitable for compact assembly requirements

Professional Applications & Engineering Value

This M5 external tooth lock washer delivers critical vibration-resistant fastening for demanding industrial applications where mechanical shocks and dynamic loads threaten joint integrity. Manufactured from 18-8 stainless steel, it provides exceptional corrosion resistance in chemical processing, marine, and outdoor equipment applications. The external tooth configuration creates multiple biting points that dig into both the fastener head and base material, maintaining clamp load where standard flat washers fail. This DIN 6798 compliant metric lock washer solves common loosening problems in machinery, automotive subsystems, and electrical enclosures where vibration-induced failures cause costly downtime. The combination of precise 5.3mm ID for M5 screws and external tooth location ensures immediate engagement without the installation challenges of internal tooth designs.

Specification Summary & Compliance

This external tooth lock washer meets DIN 6798 specifications with precise dimensional tolerances including 5.3mm internal diameter, 10mm external diameter, and 0.5-0.7mm thickness range. Manufactured from 18-8 stainless steel with external tooth configuration, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring suitability for regulated industrial applications across the European market and global manufacturing sectors.