S-96551A180 0.894" ID x 1.41" OD ASME B18.21.1; MS35333-82; NASM35333 Mil. Spec. Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through internal tooth design that bites into mating surfaces, preventing loosening under dynamic loads
• Exceptional corrosion resistance with 410 stainless steel construction, ideal for harsh industrial environments
• Optimized hardness range (Rockwell C40-50) ensures consistent spring tension and long-term performance
• Precise dimensional control with 0.894" ID and 1.41" OD for perfect fit with 7/8" fasteners
• Rigorous quality assurance through compliance with ASME B18.21.1, MS35333-82, and NASM35333 standards
• Environmental compliance with RoHS 3 and REACH regulations for global industrial applications
• Reliable torque retention through controlled thickness (0.052-0.060") maintaining consistent clamping force

Professional Applications & Engineering Value

These 410 stainless steel tooth lock washers deliver critical vibration-resistant performance in demanding industrial applications. The internal tooth configuration provides superior bite and anti-rotation characteristics, making them ideal for heavy machinery, automotive assemblies, and structural frameworks where vibration-induced loosening poses significant safety risks. Manufactured to ASME B18.21.1 specifications, these washers maintain consistent spring action and clamping force even under extreme operating conditions. The Rockwell C40-50 hardness ensures optimal spring properties without compromising ductility, while the corrosion-resistant 410 stainless steel composition extends service life in chemically aggressive environments. These industrial washers effectively solve common fastener failure points in high-vibration systems, providing engineers with reliable, standards-compliant solutions for critical connections.

Specification Summary & Compliance

This 7/8" tooth lock washer features precise dimensional specifications including 0.894" internal diameter, 1.41" outer diameter, and controlled thickness range of 0.052-0.060". Manufactured in compliance with ASME B18.21.1 standards with additional certification to MS35333-82 and NASM35333 military specifications. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications requiring restricted substance control.