S-91812A231 0.41" ID x 0.65" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through wedge lock design prevents fastener loosening in high-stress environments
• Enhanced locking performance with dual-sided serration technology providing maximum grip on both contact surfaces
• Exceptional corrosion resistance from 316 stainless steel construction for long-lasting performance in harsh conditions
• Increased durability and wear resistance through case hardening to Rockwell C51 hardness
• Reliable industrial performance with precise dimensions (0.41" ID, 0.65" OD) ensuring proper fit for 3/8" fasteners
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global manufacturing applications
• Optimized thickness range (0.070-0.090") providing consistent performance across various assembly requirements

Professional Applications & Engineering Value

This 316 stainless steel wedge lock washer addresses critical engineering challenges in industrial applications where vibration-induced fastener failure poses significant risks. The dual-sided serration technology with top and bottom teeth creates multiple biting surfaces that mechanically resist rotational forces, making it ideal for heavy machinery, automotive assemblies, and structural applications. The case hardened surface treatment to Rockwell C51 ensures the serrations maintain their sharpness and locking capability through repeated stress cycles. Manufactured from 316 stainless steel, this washer provides exceptional corrosion resistance in marine, chemical processing, and outdoor environments where standard fasteners would deteriorate. The inch system measurement ensures compatibility with North American industrial standards, while the precise dimensional control guarantees consistent performance in high-volume manufacturing operations requiring reliable vibration-resistant fastening solutions.

Specification Summary & Compliance

This wedge lock washer features precise dimensional specifications including 0.41" inner diameter, 0.65" outer diameter, and 0.070-0.090" thickness range, designed specifically for 3/8" screw applications. The washer undergoes case hardening treatment achieving Rockwell C51 hardness for enhanced durability. Manufacturing complies with industry standards for inch system fasteners and demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, including the latest SVHC requirements as of January 17, 2023. The product meets international quality standards for industrial washers with superior locking performance characteristics.