S-91812A829 1.7" ID x 2.48" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with wedge lock design that prevents loosening under extreme dynamic loads
• Exceptional corrosion resistance thanks to 316 stainless steel construction for harsh industrial environments
• Maximum locking performance with dual-sided serrations on both top and bottom surfaces
• Enhanced durability and wear resistance through case hardening to Rockwell C51 hardness
• Precise metric sizing with 1.7" ID and 2.48" OD for perfect fit with M42 fasteners
• Reliable industrial compliance meeting RoHS 3 and REACH environmental standards
• Optimized thickness range (0.460-0.480") ensuring consistent performance and installation

Professional Applications & Engineering Value

This M42 metric wedge lock washer delivers critical vibration resistance in demanding industrial applications where fastener security is paramount. Engineered from 316 stainless steel, it provides superior corrosion resistance in chemical processing, marine, and outdoor environments. The top and bottom serrations create multiple biting surfaces that dig into both the fastener and mating surface, effectively preventing rotation and loosening caused by vibration, shock loads, or thermal cycling. The case hardened treatment to Rockwell C51 ensures the serrations maintain their sharp bite through repeated use, while the precise metric dimensions guarantee proper fit with M42 screw sizes. This combination of material strength, locking mechanism, and dimensional accuracy makes it an essential component for heavy machinery, structural assemblies, and transportation equipment where failure is not an option.

Specification Summary & Compliance

This metric wedge lock washer features precise dimensions with 1.7" ID, 2.48" OD, and thickness range of 0.460-0.480" specifically designed for M42 fasteners. The washer undergoes case hardening treatment achieving Rockwell C51 hardness for optimal durability. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors while maintaining consistent locking performance and corrosion resistance.