S-97913A125 0.41" ID x 0.83" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through top and bottom serrations that create a permanent locking action, preventing fastener loosening under extreme conditions.
• Enhanced corrosion protection with a black zinc-flake coating, extending service life in harsh industrial environments.
• Exceptional durability from Rockwell C48 hardened steel construction, ensuring reliable performance in high-stress applications.
• Precise fit for 3/8" screws with a 0.41" ID and 0.83" OD, providing optimal load distribution and secure fastening.
• Consistent performance maintained through a controlled thickness range of 0.090-0.110" for uniform compression and locking force.
• Compliance with global safety standards including RoHS 3 and REACH, ensuring environmental responsibility and workplace safety.
• Versatile industrial application due to robust inch-system design, suitable for heavy machinery, automotive, and construction assemblies.

Professional Applications & Engineering Value

This wedge lock washer is engineered to solve critical vibration-induced loosening in demanding industrial settings. The dual-sided serrations bite into both the bearing surface and fastener head, creating a mechanical lock that outperforms standard washers in high-cycle applications. Made from hardened steel with Rockwell C48 hardness, it maintains structural integrity under repeated stress, while the black zinc-flake coating provides superior corrosion resistance, making it ideal for outdoor equipment, automotive subsystems, and heavy machinery. Its inch dimensions (0.41" ID, 0.83" OD) ensure compatibility with 3/8" fasteners, offering reliable performance in assemblies where safety and longevity are paramount.

Specification Summary & Compliance

This washer features precise inch-system dimensions: 0.41" ID, 0.83" OD, and thickness of 0.090-0.110". It is manufactured from hardened steel with Rockwell C48 hardness and includes top and bottom serrations for secure locking. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets current environmental and safety standards for industrial use.