S-91812A799 1.1" ID x 1.91" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through wedge lock design that maintains consistent clamping force under extreme dynamic loads
• Exceptional corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments
• Enhanced locking security with dual-sided serrations that bite into both mating surfaces for maximum slip prevention
• Extended service life from case hardening to Rockwell C51, providing excellent wear resistance and durability
• Reliable performance in demanding applications with precise 1.1" ID and 1.91" OD dimensions for perfect fit with 1" screws
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global industrial use
• Consistent torque retention through wedge action that compensates for relaxation and settlement in bolted joints

Professional Applications & Engineering Value

This 316 stainless steel wedge lock washer delivers critical vibration-resistant performance in demanding industrial applications where joint integrity is paramount. The top and bottom serration design creates multiple biting edges that dig into both the fastener and workpiece, effectively preventing loosening caused by shock, vibration, or thermal cycling. Engineered with case hardened treatment to Rockwell C51, these industrial washers maintain their locking capability through repeated loading cycles without deformation. The wedge lock mechanism provides continuous spring tension that compensates for material relaxation, making these heavy-duty washers ideal for construction equipment, transportation systems, marine hardware, and processing machinery where safety and reliability cannot be compromised.

Specification Summary & Compliance

Manufactured to precise inch system dimensions with 1.1" internal diameter and 1.91" outer diameter, this wedge lock washer features a thickness range of 0.120-0.140" for optimal performance with 1" screw applications. The case hardened surface treatment achieves Rockwell C51 hardness for superior wear characteristics. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe use across global industrial markets. The dual serration pattern provides maximum locking effectiveness while maintaining material integrity through the hardening process.