S-91812A431 0.41" ID x 0.83" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through dual-sided serrations that bite into mating surfaces, preventing loosening under extreme dynamic loads
• Exceptional corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments
• Enhanced durability and wear resistance from case hardening to Rockwell C51 hardness, maintaining locking performance through repeated use
• Precise dimensional compatibility with 0.41" ID specifically engineered for 3/8" screw applications in inch system assemblies
• Reliable environmental compliance meeting both RoHS 3 and REACH standards for safe use in regulated industries
• Optimized load distribution with 0.83" OD providing increased bearing surface for better stress management
• Consistent performance with controlled thickness (0.070-0.090") ensuring uniform clamping force across applications

Professional Applications & Engineering Value

This 316 stainless steel wedge lock washer delivers critical vibration resistance where traditional fasteners fail. The top and bottom serration design creates multiple biting points that mechanically lock the assembly, solving the persistent problem of joint loosening in high-vibration environments like heavy machinery, transportation equipment, and industrial processing systems. Made from 316 stainless steel, it withstands corrosive conditions that would degrade ordinary washers, while the case hardened treatment to Rockwell C51 ensures the serrations maintain their grip through countless stress cycles. The precise inch dimensions and 3/8" screw size compatibility make it ideal for maintenance and OEM applications where reliability cannot be compromised.

Specification Summary & Compliance

This wedge lock washer features inch system dimensions with 0.41" ID, 0.83" OD, and 0.070-0.090" thickness specifically designed for 3/8" screw applications. The washer undergoes case hardening treatment achieving Rockwell C51 hardness for optimal performance. Manufacturing complies with industry standards for wedge lock washers and maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.