S-97775A531 1.025" ID x 1.62" OD ASME B18.21.1; MS35335-42 Mil. Spec. External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through external teeth that bite into mating surfaces, preventing loosening under dynamic loads
• Exceptional corrosion protection with zinc-plated steel construction for extended service life in harsh industrial environments
• Optimized locking force with precisely engineered tooth configuration that maintains secure fastening under continuous stress
• Enhanced durability backed by Rockwell C40 hardness rating, ensuring consistent performance through repeated assembly cycles
• Precision dimensional control with 1.025" ID and 1.62" OD for perfect fit with 1" screws, eliminating installation issues
• Industry-standard compliance meeting both ASME B18.21.1 and MS35335-42 specifications for guaranteed quality and reliability
• Consistent thickness performance with 0.059-0.067" range ensuring uniform pressure distribution and reliable clamping force

Professional Applications & Engineering Value

This external tooth lock washer delivers critical vibration-resistant performance in demanding industrial applications where fastener security is paramount. Engineered from zinc-plated steel, it provides excellent corrosion resistance while maintaining the structural integrity needed for heavy machinery, automotive assemblies, and construction equipment. The external tooth configuration creates multiple biting points that dig into both the fastener head and base material, creating superior resistance to rotational forces and vibration-induced loosening. With Rockwell C40 hardness, these washers withstand repeated torque applications without deformation, making them ideal for maintenance-intensive environments. The precise dimensional control ensures perfect compatibility with 1" screw size applications, eliminating installation errors and reducing assembly time in production lines and field service scenarios.

Specification Summary & Compliance

This external tooth lock washer features precision inch system dimensions with 1.025" internal diameter, 1.62" outer diameter, and controlled thickness between 0.059-0.067". Manufactured to exacting ASME B18.21.1 standards and military specification MS35335-42, it delivers consistent performance and dimensional accuracy. The zinc-plated steel construction provides corrosion resistance while maintaining the mechanical properties required for industrial applications. Compliant with industry standards for tooth lock washers, this component ensures reliable performance in critical fastening systems where vibration resistance and secure locking are essential requirements.