S-96551A770 0.195" ID x 0.381" OD ASME B18.21.1; MS35333-73; NASM35333 Mil. Spec. Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with internal tooth design that bites into mating surfaces, preventing loosening under dynamic loads
• Exceptional corrosion resistance provided by 410 stainless steel construction for long-term reliability in harsh environments
• Optimized hardness range (Rockwell C40-50) ensures consistent spring tension and deformation resistance without compromising ductility
• Precision dimensional control with 0.195" ID and 0.381" OD provides perfect fit for No. 10 screws in critical assemblies
• Multi-standard compliance meeting ASME B18.21.1, MS35333-73, and NASM35333 specifications for guaranteed interchangeability
• Environmental regulation compliance with RoHS 3 and REACH adherence for global market acceptance and safety
• Ultra-thin profile (0.020-0.025" thickness) enables use in space-constrained applications without compromising locking performance

Professional Applications & Engineering Value

These No. 10 tooth lock washers deliver critical vibration mitigation in demanding industrial environments where fastener security is paramount. The 410 stainless steel construction provides excellent corrosion resistance while maintaining the necessary Rockwell C40-50 hardness for reliable spring action. The internal tooth location design creates multiple biting points that dig into both the fastener and substrate, effectively resisting rotational forces in high-vibration applications such as machinery, automotive assemblies, and electrical enclosures. Meeting ASME B18.21.1, MS35333-73, and NASM35333 standards ensures consistent performance across military, aerospace, and general industrial applications where specification compliance is mandatory.

Specification Summary & Compliance

This tooth lock washer features precise dimensional specifications including 0.195" internal diameter, 0.381" outer diameter, and 0.020-0.025" thickness range, engineered specifically for No. 10 screw applications. Manufactured in compliance with ASME B18.21.1, MS35333-73, and NASM35333 standards to ensure dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety requirements for industrial components.