These premium USS Flat Washers, proudly Made in the USA, are designed with a larger outer diameter for superior load distribution over large or slotted holes, minimizing material damage. They are manufactured from Medium Carbon Steel and Through Hardened to a high-performance range of approximately HRC 38-45, making them ideal for use with Grade 5 and Grade 8 fasteners in high-stress applications. The durable, environmentally friendly Zinc CR+3 Trivalent Chromate finish provides excellent corrosion resistance and is fully RoHS compliant. Meets ASME B18.21.1 Type A Wide dimensional standards. Ensure maximum bearing surface and joint integrity with this robust domestic USS quality.
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