S-97775A527 0.576" ID x 0.985" OD ASME B18.21.1; MS35335-38 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
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in demanding environments
• Exceptional durability with Rockwell C40 hardness rating that maintains tooth integrity under repeated stress
• Precise dimensional compatibility with 0.576" ID and 0.985" OD ensuring perfect fit for 9/16" fasteners
• Reliable performance assurance through compliance with ASME B18.21.1 and MS35335-38 specifications
• Optimized load distribution with 0.037-0.045" thickness providing consistent pressure across the fastened assembly
• Industry-standard compatibility with inch system fasteners for seamless integration into existing industrial applications

Professional Applications & Engineering Value

This 9/16" external tooth lock washer delivers critical anti-vibration performance for heavy machinery, automotive assemblies, and industrial equipment where dynamic loads threaten joint integrity. The zinc-plated steel construction provides essential corrosion resistance while maintaining the mechanical strength needed for high-stress applications. 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. Engineered to ASME B18.21.1 standards, this washer solves the common industrial problem of fastener failure in vibrating environments, making it ideal for construction equipment, manufacturing machinery, and transportation applications where reliability is paramount.

Specification Summary & Compliance

This external tooth lock washer features precise dimensional specifications including 0.576" inner diameter, 0.985" outer diameter, and thickness range of 0.037-0.045" for optimal performance with 9/16" fasteners. Manufactured to ASME B18.21.1 and MS35335-38 standards, ensuring consistent quality and dimensional accuracy. The Rockwell C40 hardness rating guarantees maintained tooth integrity under load. Compliant with industry standards for inch system fasteners and manufactured using materials that meet RoHS and REACH environmental requirements for industrial use.