S-93501A009 0.169" ID x 0.276" OD Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with dual top and bottom serrations that bite into mating surfaces to prevent loosening under dynamic loads
• Exceptional durability provided by Rockwell C40 hardened steel construction that withstands repeated compression cycles without deformation
• Universal compatibility with both inch (#8) and metric (M4) screw systems, eliminating the need for multiple washer types
• Reliable electrical grounding capability through the serrated design that cuts through surface oxides for consistent conductivity
• Precise dimensional control with 0.169" ID and 0.276" OD ensuring proper fit and optimal spring tension distribution
• Space-efficient design with just 0.039" overall height, ideal for applications with tight clearance requirements
• Environmental compliance assurance meeting both RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

This spring lock washer delivers critical vibration-damping performance for demanding industrial applications where fastener integrity is paramount. The dual serration pattern on both top and bottom surfaces creates multiple biting edges that penetrate mating materials, effectively resisting rotational forces in machinery, automotive assemblies, and electrical enclosures. Manufactured from steel hardened to Rockwell C40, these washers maintain their spring properties through extreme compression cycles, preventing fatigue failure in high-vibration environments. The combination of precise dimensional tolerances and dual serration design ensures consistent performance across both inch (#8) and metric (M4) fastener systems, making them ideal for equipment with mixed standardization. The top and bottom serration configuration provides superior locking action compared to single-sided alternatives, particularly in applications involving thermal cycling or dynamic loading conditions.

Specification Summary & Compliance

This spring lock washer features precise dimensional specifications including 0.169" ID, 0.276" OD, 0.020" thickness, and 0.039" overall height, engineered for No. 8 and M4 screw sizes. The component is manufactured from steel with Rockwell C40 hardness and incorporates dual serration on both top and bottom surfaces. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring suitability for use in regulated industries and international markets.