S-97775A514 0.641" ID x 1.07" OD ASME B18.21.1; MS35335-67 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
• Exceptional durability with 410 stainless steel construction offering excellent corrosion resistance and long service life
• Reliable hardness performance with Rockwell C40 rating ensuring consistent locking force and deformation resistance
• Precise dimensional compatibility with 0.641" ID and 1.07" OD designed specifically for 5/8" fasteners
• Industry-standard compliance meeting ASME B18.21.1 and MS35335-67 specifications for guaranteed performance
• Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated industries
• Optimized thickness range (0.042-0.050") providing consistent compression and reliable locking action

Professional Applications & Engineering Value

This 5/8" external tooth lock washer delivers critical vibration resistance in demanding industrial environments where fastener security is paramount. Engineered from 410 stainless steel, it provides superior corrosion resistance while maintaining structural integrity under heavy loads. The external tooth configuration creates multiple biting points that dig into both the fastener and surface, effectively preventing rotational loosening caused by machinery vibration, thermal cycling, or dynamic stresses. This design is particularly valuable in assembly applications requiring repeated disassembly and reassembly, as the teeth maintain their locking effectiveness through multiple cycles. The Rockwell C40 hardness ensures the teeth resist flattening under clamp load, while the precise dimensional tolerances guarantee proper fit with 5/8" fasteners in critical machinery, heavy equipment, and structural applications where safety and reliability cannot be compromised.

Specification Summary & Compliance

This tooth lock washer features dimensional specifications of 0.641" ID, 1.07" OD, and thickness range of 0.042-0.050" designed for 5/8" screw size applications. Manufactured to meet ASME B18.21.1 and MS35335-67 standards, ensuring precise tooth configuration and performance requirements. The washer maintains Rockwell C40 hardness for optimal mechanical properties and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for use across various industrial sectors with strict material restrictions.