S-96551A400 0.332" ID x 0.61" OD ASME B18.21.1; MS35333-109; 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 fastener loosening in dynamic applications
• Excellent corrosion resistance from bronze construction, ideal for harsh environments and marine applications
• Enhanced durability with Rockwell B90 hardness, maintaining tooth integrity under repeated loading cycles
• Precise dimensional compatibility with 5/16" fasteners (0.332" ID, 0.61" OD) ensuring perfect fit in inch-system assemblies
• Reliable performance compliance meeting ASME B18.21.1, MS35333-109, and NASM35333 specifications for quality assurance
• Optimized load distribution with controlled thickness (0.028-0.034") preventing surface damage to connected components
• Industry-standard compatibility designed for aerospace, military, and industrial applications requiring certified components

Professional Applications & Engineering Value

This bronze tooth lock washer delivers exceptional engineering value in applications where vibration-induced loosening poses significant reliability risks. The internal tooth configuration creates multiple biting points that dig into both the fastener and base material, creating mechanical interference that resists rotational movement. Made from bronze material, these washers offer natural corrosion resistance without requiring additional plating or coatings, making them ideal for marine equipment, chemical processing systems, and outdoor industrial machinery. The Rockwell B90 hardness ensures the teeth maintain their biting capability through numerous installation cycles, while the precise dimensional tolerances prevent galling and surface damage to expensive components. These ASME B18.21.1 certified washers are particularly valuable in aerospace assemblies, military equipment, and heavy machinery where failure prevention is critical.

Specification Summary & Compliance

This 5/16" bronze tooth lock washer features precise dimensional specifications including 0.332" inner diameter, 0.61" outer diameter, and thickness ranging from 0.028" to 0.034". The component meets ASME B18.21.1 standards for tooth lock washers and complies with military specifications MS35333-109 and NASM35333. Manufactured to inch system requirements with internal tooth location, this washer demonstrates compliance with industry-standard manufacturing practices and quality control procedures suitable for demanding industrial and aerospace applications.