S-90895A210 0.457" ID x 0.626" OD Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with dual-sided serrations (top and bottom) that bite into mating surfaces to prevent loosening under dynamic loads
• Enhanced durability and wear resistance thanks to Rockwell C38 hardness, maintaining performance in high-stress applications
• Reliable corrosion protection through zinc-plated steel construction, extending service life in various industrial environments
• Precise fit and compatibility with 0.457" ID and 0.626" OD dimensions, ensuring optimal performance for both 7/16" and M11 screw sizes
• Versatile inch and metric system support for global equipment maintenance and assembly requirements
• Consistent load distribution with 0.063" overall height design, reducing point stress on fastened components
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

This zinc-plated steel spring lock washer delivers critical anti-vibration performance in demanding industrial settings. The dual serration design on both top and bottom surfaces creates positive locking action that counters rotational forces in machinery, automotive, and heavy equipment applications. With Rockwell C38 hardness, it maintains structural integrity under repeated stress cycles, while the zinc plating provides essential corrosion resistance in humid or outdoor environments. Engineered for 7/16" and M11 screw sizes, this washer solves common fastener loosening problems in assembly lines, structural frameworks, and precision equipment where vibration-induced failure is a primary concern. The combination of inch and metric compatibility makes it ideal for multinational operations and equipment servicing.

Specification Summary & Compliance

This spring lock washer features precise dimensional specifications including 0.457" ID, 0.626" OD, 0.035" thickness, and 0.063" overall height. Manufactured from zinc-plated steel with Rockwell C38 hardness, it meets industrial standards for vibration-resistant fasteners. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant with current SVHC requirements as of January 17, 2023, ensuring environmental safety and regulatory adherence for industrial procurement.