S-92165A122 0.136" ID x 0.28" 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 construction, ideal for harsh industrial environments and marine applications
• Consistent locking performance with Rockwell B60 hardness, maintaining spring tension and tooth engagement over time
• Precise dimensional fit with 0.136" ID specifically engineered for No. 5 screws, ensuring proper installation and function
• Industry-standard compliance meeting ASME B18.21.1 specifications for reliable, predictable performance
• Environmental responsibility with RoHS 3 and REACH compliance, safe for regulated applications
• Durable construction with 0.014-0.018" thickness providing optimal balance between flexibility and strength

Professional Applications & Engineering Value

These bronze tooth lock washers deliver exceptional engineering value in applications where vibration-induced loosening poses significant reliability concerns. The internal tooth configuration creates multiple biting points that dig into both the fastener and workpiece, maintaining clamp force where standard flat washers fail. The bronze material offers natural corrosion resistance while providing sufficient hardness (Rockwell B60) to prevent deformation under load. This combination makes them ideal for electrical equipment, marine hardware, and precision machinery where both corrosion protection and vibration resistance are critical. The specific design for No. 5 screw size applications ensures perfect compatibility in assemblies requiring smaller fasteners with maximum locking security.

Specification Summary & Compliance

This internal tooth lock washer features precise inch system dimensions with 0.136" inner diameter, 0.28" outer diameter, and 0.014-0.018" thickness range. Manufactured to ASME B18.21.1 specifications for tooth lock washers, ensuring dimensional accuracy and performance reliability. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, containing no substances of very high concern above threshold limits as of the latest compliance verification.