S-92165A030 0.32" ID x 0.61" 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.
• Durable bronze construction offers excellent corrosion resistance and maintains performance in harsh industrial environments.
• Rockwell B60 hardness ensures long-lasting mechanical strength and resistance to wear over repeated use cycles.
• Precise inch dimensions (0.32" ID x 0.61" OD) guarantee easy installation and reliable fit for 5/16" screw sizes.
• ASME B18.21.1 compliance assures consistent quality, dimensional accuracy, and interoperability with standard fasteners.
• RoHS 3 and REACH compliance meets stringent environmental regulations, making them safe for global industrial supply chains.
• Internal tooth design provides concentrated locking force, ideal for applications where space is limited.

Professional Applications & Engineering Value

This bronze tooth lock washer is engineered to address common industrial challenges like vibration-induced fastener failure and material degradation. The internal tooth location ensures maximum grip on both the screw and surface, distributing stress evenly to prevent back-off in heavy-duty applications such as machinery, automotive assemblies, and electrical enclosures. Made from bronze, it resists corrosion and galling, extending service life in humid or chemically aggressive settings. Compliant with ASME B18.21.1, it delivers reliable performance in inch-based systems, reducing maintenance downtime and enhancing safety in critical industrial washers applications where precision and durability are paramount.

Specification Summary & Compliance

This washer features precise dimensions: 0.32" ID, 0.61" OD, and thickness of 0.028-0.034", designed for 5/16" screw sizes with Class 2A thread fit tolerances. It conforms to ASME B18.21.1 standards for tooth lock washers, ensuring dimensional accuracy and mechanical reliability. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), supporting environmentally responsible manufacturing and use in regulated industries.