S-92164A005 0.115" ID x 0.26" 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 with bronze construction, ideal for harsh industrial environments and marine applications
• Consistent locking performance with Rockwell B60 hardness ensuring dimensional stability and long-term reliability
• Precision dimensional control with 0.115" ID and 0.26" OD providing perfect fit for No. 4 screws in inch system applications
• Industry-standard compliance with ASME B18.21.1 specifications guaranteeing interchangeability and quality assurance
• Environmental responsibility through RoHS 3 and REACH compliance, meeting strict international regulatory requirements
• Optimized thickness range (0.012-0.018") allowing for proper compression and secure fastening in various assembly conditions

Professional Applications & Engineering Value

These bronze tooth lock washers deliver exceptional engineering value in demanding applications where vibration-induced loosening compromises assembly integrity. The external tooth configuration creates multiple biting points that dig into both the fastener and workpiece, maintaining clamp force in high-vibration environments like heavy machinery, automotive systems, and electrical enclosures. The bronze material offers natural corrosion resistance while providing sufficient hardness (Rockwell B60) to prevent deformation under load. This combination makes them ideal for industrial maintenance, marine equipment, and electrical applications where both vibration resistance and corrosion protection are critical. The precise dimensional control ensures consistent performance across production runs, reducing assembly issues and maintenance requirements in B2B industrial settings.

Specification Summary & Compliance

This No. 4 bronze external tooth lock washer features precise inch system dimensions with 0.115" internal diameter and 0.26" outer diameter, manufactured to exacting ASME B18.21.1 standards for dimensional accuracy and performance reliability. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for global industrial applications. The specified thickness range of 0.012-0.018" provides controlled compression characteristics for optimal locking performance in various assembly scenarios.