S-90416A113 0.195" ID x 0.601" OD ASME B18.21.1 Internal / External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with dual internal/external teeth that bite into mating surfaces to prevent loosening under dynamic loads
• Enhanced durability with Rockwell C40 hardness rating ensuring long-term performance in demanding applications
• Reliable corrosion protection through black-oxide steel finish for extended service life in industrial environments
• Precise compatibility with No. 10 screws and 0.195" ID for secure fitment and optimal load distribution
• Industry-standard compliance with ASME B18.21.1 specifications guaranteeing consistent quality and performance
• Environmental responsibility through RoHS 3 and REACH compliance for safe use in regulated industries
• Optimized grip strength from 0.601" OD and 0.027-0.031" thickness providing maximum surface contact and locking force

Professional Applications & Engineering Value

This black-oxide steel tooth lock washer delivers exceptional engineering value in applications where vibration-induced fastener failure is a critical concern. The unique internal/external tooth configuration creates multiple biting points that resist rotational movement, making it ideal for heavy-duty industrial equipment, automotive assemblies, and machinery subjected to constant operational stresses. The Rockwell C40 hardness ensures the teeth maintain their gripping capability without deformation, while the black-oxide surface treatment provides corrosion resistance without compromising the washer's mechanical properties. Engineered to ASME B18.21.1 standards, this vibration resistant washer offers predictable performance in inch-system applications requiring reliable locking washers for No. 10 screws.

Specification Summary & Compliance

This tooth lock washer features precise dimensional specifications including 0.195" ID, 0.601" OD, and 0.027-0.031" thickness range. Manufactured to ASME B18.21.1 standards for consistent quality and performance in inch measurement systems. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant with current SVHC requirements, ensuring environmental responsibility and regulatory adherence for industrial applications worldwide.