S-92164A009 0.168" ID x 0.381" OD ASME B18.21.1 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 from bronze construction, ideal for harsh industrial environments and marine applications
• Consistent hardness performance with Rockwell B60 rating ensuring reliable spring action and tooth engagement
• Precision dimensional control with 0.168" ID and 0.381" OD providing optimal fit for No. 8 screws
• Industry-standard compliance meeting ASME B18.21.1 specifications for guaranteed quality and interchangeability
• Environmental responsibility with RoHS 3 and REACH compliance, safe for regulated applications
• Enhanced load distribution from controlled thickness (0.018-0.023") preventing surface damage to connected materials

Professional Applications & Engineering Value

This bronze external tooth lock washer delivers critical vibration-resistant fastening for demanding industrial applications where reliability is paramount. The bronze material provides natural corrosion resistance while maintaining excellent conductivity, making it ideal for electrical connections, marine equipment, and chemical processing installations. The external tooth configuration ensures maximum biting action into both the fastener and workpiece, creating a mechanical lock that withstands severe vibration and thermal cycling. Engineered to ASME B18.21.1 standards, this washer offers predictable performance in assembly lines, machinery maintenance, and OEM equipment where consistent locking force is essential. The combination of Rockwell B60 hardness and precise dimensional control ensures repeated usability without performance degradation.

Specification Summary & Compliance

This external tooth lock washer features inch system dimensions with 0.168" internal diameter and 0.381" external diameter, specifically designed for No. 8 screws. Manufactured to ASME B18.21.1 specifications with controlled thickness between 0.018-0.023" for consistent performance. The washer is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for global industrial applications.