S-95584A312 0.641" ID x 1.07" OD ASME B18.21.1 External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through external tooth design that bites into mating surfaces to prevent loosening under dynamic loads
• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Optimized dimensional precision with 0.641" ID and 1.07" OD ensuring perfect fit for 5/8" fasteners
• Enhanced durability with Rockwell B88 hardness providing reliable performance under repeated stress
• Industry-standard compliance meeting ASME B18.21.1 specifications for consistent quality and reliability
• Environmental responsibility with full RoHS 3 and REACH compliance for sustainable operations
• Secure locking action through external tooth configuration that maintains clamping force in high-vibration applications

Professional Applications & Engineering Value

This 5/8" external tooth lock washer delivers critical vibration-resistant performance for demanding industrial applications where fastener security is paramount. The 18-8 stainless steel construction provides excellent corrosion resistance in challenging environments, from marine applications to chemical processing facilities. The external tooth configuration ensures maximum biting action into both the fastener and mating surface, creating a reliable locking mechanism that withstands extreme vibration and thermal cycling. Engineered to ASME B18.21.1 standards, this washer maintains precise dimensional tolerances for consistent performance across assembly lines. The combination of Rockwell B88 hardness and optimized thickness (0.042-0.050") ensures the washer provides sufficient spring tension without compromising material integrity, making it ideal for heavy machinery, automotive assemblies, and industrial equipment where vibration-induced loosening can lead to catastrophic failures.

Specification Summary & Compliance

This precision external tooth lock washer features dimensional specifications of 0.641" ID, 1.07" OD, and thickness range of 0.042-0.050" specifically designed for 5/8" fasteners. Manufactured from 18-8 stainless steel with Rockwell B88 hardness, the product fully complies with ASME B18.21.1 mechanical and dimensional requirements. The washer meets stringent environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance with current SVHC requirements, ensuring safe use across global industrial markets.