5/16 USS Flat Washer Med Carbon Through Hardened Plain Domestic USA - Carton (3500)

Secure your assemblies with high-strength 5/16" USS Flat Washers, conveniently packaged in a bulk quantity of 3,500. Manufactured in the USA from thru-hardened medium carbon steel, these washers offer superior durability and prevent bolt and nut embedment into softer materials. Their plain finish and wide USS pattern are engineered to distribute pressure evenly, making them an essential component for machinery, automotive, and construction applications.