S-90895A030 0.331" ID x 0.512" OD Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws
Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Special Type Parameters
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior vibration resistance through dual top and bottom serrations that bite into mating surfaces for reliable locking
- Exceptional corrosion resistance with 18-8 stainless steel construction suitable for harsh industrial environments
- Dual measurement compatibility working with both 5/16" and M8 screw sizes for versatile applications
- Enhanced durability with Rockwell C38 hardness maintaining performance under repeated stress
- Consistent spring action maintaining tension across thermal cycles and load variations
- Environmental compliance meeting RoHS 3 and REACH standards for global industrial use
- Precise dimensional fit with 0.331" ID and 0.512" OD ensuring proper installation and performance
Professional Applications & Engineering Value
This spring lock washer with dual top and bottom serration addresses critical vibration-induced loosening in demanding applications. The 18-8 stainless steel construction provides excellent corrosion resistance for outdoor equipment, marine components, and chemical processing machinery where environmental factors degrade ordinary fasteners. The dual serration design creates multiple biting points that significantly enhance locking performance compared to standard washers, making it ideal for high-vibration environments like automotive assemblies, industrial machinery, and electrical enclosures. The combination of Rockwell C38 hardness and precise dimensional specifications ensures consistent spring tension and reliable performance across thermal cycles and dynamic loading conditions, reducing maintenance frequency and preventing equipment downtime in critical 5/16" and M8 screw applications.
Specification Summary & Compliance
This spring lock washer features precise dimensional specifications including 0.331" ID, 0.512" OD, 0.031" thickness, and 0.055" overall height. Manufactured from 18-8 stainless steel with Rockwell C38 hardness, it provides consistent performance for both inch (5/16") and metric (M8) screw systems. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental standards for industrial components while ensuring reliable locking performance through its dual serration design on both top and bottom surfaces.
