S-96551A410 0.384" ID x 0.692" OD ASME B18.21.1; MS35333-110; 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
• Excellent corrosion resistance from premium bronze material, ideal for harsh industrial environments and marine applications
• Optimal hardness performance with Rockwell B90 rating ensuring consistent locking force without material deformation
• Precise dimensional compatibility with 3/8" screws featuring 0.384" ID and 0.692" OD for perfect fit and uniform load distribution
• Multiple specification compliance meeting ASME B18.21.1, MS35333-110, and NASM35333 standards for guaranteed reliability
• Durable thin profile with 0.032-0.040" thickness providing effective locking in confined spaces without bulk
• Industry-proven reliability through standardized manufacturing ensuring consistent performance across all applications

Professional Applications & Engineering Value

These bronze tooth lock washers deliver critical vibration resistance in demanding mechanical systems where fastener security is paramount. The internal tooth configuration creates multiple biting points that dig into both the screw head and base material, creating a mechanical lock that withstands severe vibration and thermal cycling. Made from high-grade bronze, these washers offer natural corrosion resistance while maintaining their spring properties in high-temperature environments. The Rockwell B90 hardness ensures the teeth maintain their bite without shearing off, making them ideal for heavy machinery, aerospace components, marine equipment, and industrial manufacturing applications where reliability cannot be compromised. The precise 3/8" screw compatibility and standardized dimensions guarantee proper installation and optimal performance in critical assemblies.

Specification Summary & Compliance

This bronze internal tooth lock washer features precise dimensional tolerances with internal diameter of 0.384", outer diameter of 0.692", and thickness range of 0.032-0.040". Manufactured to exacting ASME B18.21.1 standards with additional compliance to MS35333-110 and NASM35333 specifications, ensuring consistent quality and performance. The washer's internal tooth location provides optimal locking action for 3/8" screw applications. All materials and manufacturing processes comply with industry standards for mechanical fasteners, delivering reliable performance in critical industrial applications.