S-91812A798 1.1" ID x 1.54" OD Extreme-Vibration-Resistant Wedge Lock Washers

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 corrosion resistance thanks to 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure
• Maintained clamp load integrity under extreme conditions due to the wedge lock design that compensates for relaxation and settlement
• Enhanced durability and wear resistance through case hardening treatment achieving Rockwell C51 hardness
• Precise compatibility with 1" screws and standardized inch dimensions (1.1" ID, 1.54" OD) for reliable fitment
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe, regulated industrial use
• Reduced maintenance requirements through reliable locking performance that extends service intervals in heavy-duty applications

Professional Applications & Engineering Value

This 316 stainless steel wedge lock washer delivers critical engineering solutions where vibration-induced fastener failure poses significant operational risks. The top and bottom serrated design creates multiple biting edges that aggressively resist rotational forces, maintaining joint integrity in heavy machinery, transportation equipment, and structural assemblies. Unlike standard washers that lose tension over time, the wedge lock mechanism actively compensates for material relaxation and thermal cycling. Combined with case hardening to Rockwell C51, these washers withstand extreme shear forces while the 316 stainless steel material provides superior corrosion resistance in marine, chemical processing, and outdoor industrial applications. This combination addresses the fundamental challenge of maintaining clamp load in high-vibration environments while offering long-term reliability.

Specification Summary & Compliance

Manufactured to inch system standards with precise dimensions (1.1" ID, 1.54" OD, 0.120-0.140" thickness) for compatibility with 1" fasteners. Features case hardened treatment achieving Rockwell C51 hardness for optimal wear resistance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across industrial sectors.