S-90895A212 0.539" ID x 0.748" OD Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws
Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Special Type Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance through spring lock design prevents fastener loosening in high-stress environments
- Enhanced gripping power with dual-sided serrations (top and bottom) providing maximum surface contact and anti-rotation performance
- Durable corrosion protection from zinc-plated steel construction ensuring long-term reliability in harsh industrial conditions
- Precision dimensional compatibility with 0.539" ID and 0.748" OD designed specifically for 1/2" and M12 screw applications
- Exceptional hardness performance at Rockwell C38 rating maintains structural integrity under heavy loads
- Dual measurement system compatibility serving both inch (1/2") and metric (M12) fastener requirements
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications
Professional Applications & Engineering Value
This spring lock washer delivers critical engineering value in applications where vibration-induced fastener failure poses significant risks. The zinc-plated steel construction provides essential corrosion resistance while maintaining the spring tension required for continuous locking force. The innovative top and bottom serration design creates multiple biting surfaces that dramatically improve grip compared to standard washers, making it ideal for heavy machinery, automotive assemblies, and industrial equipment where vibration resistance is paramount. The precise 0.539" inner diameter and 0.748" outer diameter ensure perfect fitment for both 1/2" and M12 screws, offering flexibility across measurement systems without compromising performance in demanding industrial applications.
Specification Summary & Compliance
This precision spring lock washer features exact dimensional specifications with 0.539" inner diameter, 0.748" outer diameter, 0.039" thickness, and 0.071" overall height. Manufactured to deliver consistent Rockwell C38 hardness performance, the washer maintains structural integrity under compression. The product fully complies with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) standards regarding substance restrictions, ensuring environmental and safety compliance for global industrial distribution and use.
