S-93281A114 0.79" 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, preventing loosening under dynamic loads.
• Enhanced corrosion protection from the zinc-flake coating, extending service life in harsh industrial environments.
• Exceptional durability provided by Rockwell C46 hardness, ensuring the washer maintains its locking force and shape after repeated use.
• Reliable performance for 3/4" screws with a precise 0.79" ID, ensuring a perfect fit and optimal clamping force.
• Secure fastening in high-stress applications due to the spring lock/wedge lock design that compensates for relaxation and settlement.
• Broad industrial compliance, meeting RoHS 3 and REACH standards for safe and sustainable use in regulated sectors.
• Versatile top and bottom serration engagement for effective locking on both the screw head and the workpiece surface.

Professional Applications & Engineering Value

This spring lock washer is engineered to solve critical fastening challenges in heavy machinery, automotive assemblies, and structural frameworks where vibration resistance is paramount. The zinc-flake-coated steel construction provides a robust barrier against corrosion, significantly reducing maintenance needs and failure risks in exposed or chemically aggressive settings. Its top and bottom serrations create a multi-directional locking action, effectively resisting rotational and axial movements that cause standard washers to fail. By maintaining Rockwell C46 hardness, the washer delivers consistent spring-back performance, ensuring long-term joint integrity and reducing downtime for re-tightening. This makes it an indispensable component for engineers specifying reliable fastening solutions in the inch system for demanding industrial applications.

Specification Summary & Compliance

This washer features an ID of 0.79", OD of 1.21", and a thickness range of 0.210-0.220", designed for a 3/4" screw size. Manufactured from zinc-flake-coated steel with a hardness of Rockwell C46, it ensures dimensional stability and high strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its adherence to environmental and safety standards for industrial use.