S-96551A270 0.448" ID x 0.789" OD ASME B18.21.1; MS35333-43; 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 to prevent loosening under dynamic loads
• Enhanced corrosion protection through cadmium-plated steel construction for extended service life in harsh environments
• Precision dimensional control with 0.448" ID and 0.789" OD ensuring perfect fit for 7/16" fasteners
• Exceptional hardness rating of Rockwell C40-50 maintains tooth integrity and locking performance under high stress
• Industry-standard compliance meeting ASME B18.21.1, MS35333-43, and NASM35333 specifications for reliable performance
• Optimized thickness range (0.032-0.040") provides consistent compression and spring action for secure fastening
• Durable material selection combining steel strength with cadmium plating for both mechanical and environmental protection

Professional Applications & Engineering Value

This 7/16" internal tooth lock washer delivers critical vibration-resistant performance in demanding industrial applications where fastener security is paramount. The cadmium-plated steel construction provides excellent corrosion resistance while maintaining the mechanical strength needed for heavy machinery, automotive assemblies, and structural frameworks. The internal tooth configuration ensures maximum biting action into both the fastener and mating surface, creating a reliable locking mechanism that prevents rotational loosening caused by vibration, thermal cycling, or dynamic loading. Engineered to meet rigorous ASME B18.21.1 standards and military specifications MS35333-43 and NASM35333, this precision tooth lock washer offers predictable performance in critical assemblies where failure is not an option.

Specification Summary & Compliance

This internal tooth lock washer features precise dimensional specifications including 0.448" inner diameter, 0.789" outer diameter, and thickness range of 0.032-0.040" designed specifically for 7/16" fasteners. Manufactured from cadmium-plated steel with Rockwell C40-50 hardness, the component meets ASME B18.21.1 dimensional and performance requirements along with military specifications MS35333-43 and NASM35333. The inch system measurement ensures compatibility with standard industrial fastening systems, while the internal tooth location provides optimal locking performance in accordance with established engineering standards for vibration-resistant applications.