S-97775A519 0.141" ID x 0.32" OD ASME B18.21.1; MS35335-30 Mil. Spec. External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with external teeth that bite into mating surfaces to prevent loosening under dynamic loads
• Enhanced corrosion protection through zinc-plated steel construction for extended service life in industrial environments
• Optimized for No. 6 screw applications with precise 0.141" ID ensuring perfect fit and consistent clamping force
• Exceptional durability backed by Rockwell C40 hardness rating that maintains tooth integrity through repeated installations
• Reliable compliance meeting both ASME B18.21.1 and MS35335-30 specifications for guaranteed performance in critical assemblies
• Secure fastening performance with external tooth configuration that provides maximum surface contact and prevents rotation
• Precision thickness control (0.016-0.022") ensuring consistent compression and reliable locking action across production runs

Professional Applications & Engineering Value

This external tooth lock washer delivers critical vibration-resistant fastening solutions for demanding industrial applications where joint integrity is paramount. The zinc-plated steel construction provides essential corrosion resistance while maintaining the mechanical strength needed for heavy-duty assemblies. Engineered with precision-formed external teeth, this washer creates multiple biting points that dig into both the fastener head and base material, effectively resisting rotational forces and vibrational loosening in machinery, automotive components, and electrical enclosures. The Rockwell C40 hardness ensures teeth maintain their sharp engagement profile through multiple installation cycles, while compliance with ASME B18.21.1 and MS35335-30 specifications guarantees dimensional accuracy and performance reliability in critical fastening systems where failure is not an option.

Specification Summary & Compliance

This washer features precision inch dimensions with 0.141" ID, 0.32" OD, and controlled thickness between 0.016-0.022" for consistent performance with No. 6 screws. Manufactured to exacting ASME B18.21.1 standards and military specification MS35335-30, ensuring dimensional accuracy and functional reliability. The external tooth configuration provides maximum locking effectiveness while the zinc-plated finish offers basic corrosion protection. Complies with industry standards for mechanical properties and dimensional tolerances suitable for industrial and military applications.