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The 5/16" Flat Washers (USS), Medium Carbon Through Hardened Steel, Yellow Zinc Cr+6, Import (Dims: 3/8" I.D. x 7/8" O.D.) is stocked and ready to ship from South Coast Fasteners. It is made from Medium Carbon Through Hardened Steel with a Yellow Zinc Cr+6 finish. Built for distributing bearing pressure under a bolt or nut, it is part of our Thru Hardened USS Flat Washers line, stocked across industries such as Automotive.
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