S-90127A118 0.646" ID x 1.273" OD Heavy-Vibration-Resistant Spring Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through top-mounted serrations that bite into mating surfaces, preventing fastener loosening under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction, extending service life in demanding industrial environments
• Exceptional durability achieved through Rockwell C40 hardness rating, maintaining spring tension and locking performance through repeated cycles
• Precise dimensional compatibility with 5/8" fasteners, featuring 0.646" ID and 1.273" OD for accurate fit and optimal load distribution
• Consistent spring performance with controlled thickness (0.095-0.101") and overall height (0.156") ensuring reliable deflection characteristics
• Global compliance assurance meeting RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards for international industrial applications
• Optimized for inch-system applications in North American machinery and equipment, eliminating metric conversion issues

Professional Applications & Engineering Value

This zinc-plated steel spring lock washer delivers critical vibration resistance in heavy machinery, automotive assemblies, and industrial equipment where dynamic loads threaten fastener integrity. The top serration design creates mechanical interference that prevents rotational loosening, while the Rockwell C40 hardness ensures the spring maintains constant tension under compression. The zinc plating provides essential corrosion protection for applications exposed to moisture, oils, and industrial chemicals. Engineered specifically for 5/8" fasteners in inch-system applications, this spring lock washer solves common maintenance issues in manufacturing, construction, and transportation equipment by eliminating the need for frequent retightening and reducing downtime.

Specification Summary & Compliance

This spring lock washer features precise dimensional specifications including 0.646" ID, 1.273" OD, 0.095-0.101" thickness, and 0.156" overall height, designed for compatibility with 5/8" fasteners in inch-system applications. Manufactured to industry standards with Rockwell C40 hardness for consistent spring performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant (updated through 06/14/2023, covering 235 SVHC), meeting international environmental and safety regulations for industrial components.