S-92165A123 0.231" ID x 0.41" OD ASME B18.21.1 Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with internal teeth that bite into mating surfaces, preventing loosening under dynamic loads
• Excellent corrosion resistance from bronze material, ideal for harsh industrial environments and outdoor applications
• Optimized dimensional accuracy with 0.231" ID and 0.41" OD precisely matching No. 12 screw sizes for perfect fit
• Enhanced durability with Rockwell B60 hardness providing reliable performance under repeated stress
• Industry-standard compliance meeting ASME B18.21.1 specifications for consistent quality and interchangeability
• Environmental responsibility with full RoHS 3 and REACH compliance for sustainable manufacturing practices
• Precise thickness control (0.020-0.027") ensuring uniform compression and consistent locking force

Professional Applications & Engineering Value

These bronze tooth lock washers deliver exceptional engineering value in applications where vibration-induced loosening compromises safety and performance. The internal tooth configuration creates multiple biting points that dig into both the fastener and substrate, maintaining clamp load integrity in high-vibration environments like machinery, automotive assemblies, 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 particularly valuable in marine, chemical processing, and outdoor infrastructure applications where both vibration resistance and environmental durability are critical. The precise dimensional control ensures consistent performance across production runs, reducing assembly issues and maintenance requirements.

Specification Summary & Compliance

This No. 12 bronze tooth lock washer features precise inch system dimensions with 0.231" internal diameter and 0.410" outer diameter, maintaining tight thickness tolerances between 0.020-0.027". Manufactured in full compliance with ASME B18.21.1 standards for tooth lock washers, ensuring dimensional consistency and performance reliability. The product meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) requirements, confirming adherence to the latest environmental regulations and substance restrictions for industrial components.