Imperial Supplies Lock Washer Part No: 76171

Imperial Supplies 76171 Lock Washer is crafted from high-strength alloy spring steel, heat-treated to provide reliable coil tension and conforming to both SAE and ASME B18.21.1 standards. Designed to wedge against nut and bolt bearing surfaces upon installation, it delivers consistent locking performance to prevent loosening under vibration or operational stresses. Ideal for high-load and high-vibration applications—such as suspension systems, engine and transmission mounts, chassis brackets, and heavy-duty truck fittings—this washer ensures secure and enduring bolt retention. Sold through Wofford Truck Parts, 76171 offers a durable, professional-grade solution for fastening integrity in demanding conditions.