S-93281A112 0.84" ID x 1.21" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with dual-sided serrations that bite into mating surfaces to prevent loosening under dynamic loads
• Exceptional corrosion protection through zinc-flake coating that provides long-lasting performance in harsh industrial environments
• Optimized dimensional accuracy with precise 0.84" ID and 1.21" OD measurements ensuring perfect fit for M20 fasteners
• Enhanced durability with Rockwell C46 hardness rating that maintains structural integrity under extreme pressure
• Reliable locking performance through wedge lock design that creates consistent tension and prevents back-off
• Versatile installation with top and bottom serrations allowing effective performance in various orientation scenarios
• Consistent thickness control between 0.220-0.230" ensuring uniform clamping force and pressure distribution

Professional Applications & Engineering Value

This M20 spring lock washer delivers critical engineering solutions where vibration-induced fastener failure poses significant operational risks. The zinc-flake-coated steel construction provides exceptional corrosion resistance while maintaining the mechanical properties needed for demanding applications. The dual-sided serration design creates multiple biting surfaces that aggressively resist rotational movement, making these metric wedge lock washers ideal for heavy machinery, automotive assemblies, and industrial equipment subjected to constant vibration and shock loads. The precise top and bottom serration pattern ensures consistent performance regardless of installation orientation, while the controlled thickness maintains proper preload in bolted joints. Engineered specifically for M20 fastener systems, this washer addresses the critical need for reliable vibration resistance in mission-critical applications where maintenance access is limited and failure consequences are severe.

Specification Summary & Compliance

This spring lock washer features metric dimensions with 0.84" inner diameter and 1.21" outer diameter, manufactured to precise thickness specifications of 0.220-0.230". The component meets industry standards for wedge lock washers with Rockwell C46 hardness ensuring mechanical integrity. The zinc-flake coating provides superior corrosion protection while maintaining compliance with RoHS and REACH environmental directives. Engineered for use with M20 screw sizes, this washer delivers reliable performance in accordance with industrial fastening specifications for vibration-resistant applications.