S-95795A007 0.168" ID x 0.506" OD ASME B18.21.1 Internal / External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with dual internal and external teeth that bite into mating surfaces, preventing fastener loosening in high-stress applications
• Enhanced corrosion protection through zinc plating that provides durable surface coverage for extended service life in demanding environments
• Exceptional hardness rating of Rockwell C40 ensures consistent performance and maintains locking force under repeated loading cycles
• Precision dimensional control with 0.168" ID and 0.506" OD ensures perfect fit for No. 8 screws and optimal load distribution
• Industry-standard compliance with ASME B18.21.1 guarantees consistent quality and reliable performance in mechanical assemblies
• Environmental regulation adherence through RoHS 3 and REACH compliance for safe use in global industrial applications
• Optimized thickness range of 0.023-0.027" provides ideal spring tension while accommodating surface variations

Professional Applications & Engineering Value

This zinc-plated steel tooth lock washer delivers critical vibration-resistant performance in demanding mechanical systems where fastener security is paramount. The unique internal/external tooth configuration creates multiple biting points that significantly enhance grip strength, effectively preventing rotational loosening caused by machinery vibration, thermal cycling, or dynamic loads. Manufactured to ASME B18.21.1 specifications, these precision No. 8 washers provide reliable locking action in automotive assemblies, industrial equipment, electrical enclosures, and heavy machinery. The Rockwell C40 hardness ensures teeth maintain their sharp biting edges through repeated installation cycles, while the zinc plating offers sacrificial corrosion protection, extending service life in challenging environments where moisture or chemicals are present.

Specification Summary & Compliance

This tooth lock washer features precise dimensional specifications including 0.168" internal diameter, 0.506" outer diameter, and thickness ranging from 0.023" to 0.027" specifically designed for No. 8 screw applications. Manufactured in compliance with ASME B18.21.1 standards for dimensional accuracy and performance requirements. The product fully meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) compliance with the latest SVHC list as of January 17, 2023, ensuring environmental responsibility and regulatory adherence for global industrial use.