S-96551A670 0.168" ID x 0.34" OD ASME B18.21.1; MS35333-72; NASM35333 Mil. Spec. Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with Rockwell C40-50 hardness for reliable performance in high-stress environments
• Enhanced locking security through internal tooth design that bites into mating surfaces to prevent loosening
• Corrosion-resistant construction using 410 stainless steel for durability in harsh industrial conditions
• Precision dimensional accuracy with 0.168" ID and 0.34" OD ensuring perfect fit for No. 8 screws
• Multi-standard compliance meeting ASME B18.21.1, MS35333-72, and NASM35333 for guaranteed quality
• Environmental regulation compliance with RoHS 3 and REACH for safe use in regulated industries
• Consistent thickness control between 0.018-0.023" for uniform performance across applications

Professional Applications & Engineering Value

This No. 8 tooth lock washer delivers exceptional engineering value through its 410 stainless steel construction and internal tooth location design. The combination of Rockwell C40-50 hardness and precision tooth configuration creates a powerful anti-vibration solution that maintains fastener integrity in demanding applications. Industrial lock washers like this are essential in machinery, automotive assemblies, and electrical equipment where constant vibration would otherwise compromise standard fasteners. The internal tooth design provides superior biting action without damaging visible surfaces, making it ideal for both functional and aesthetic applications. Meeting ASME B18.21.1 and military specifications ensures consistent performance across critical industrial and aerospace applications where fastener failure is not an option.

Specification Summary & Compliance

This precision tooth lock washer features dimensional specifications of 0.168" internal diameter, 0.34" outer diameter, and thickness ranging from 0.018" to 0.023" designed specifically for No. 8 screw size applications. Manufactured to exacting standards including ASME B18.21.1, MS35333-72, and NASM35333 with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The inch system measurement ensures compatibility with standard industrial equipment and replacement parts.