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2 1/2 inch length USS Flat Washers (ASME B18. 22.1)

USS Flat Washers were among the first known commercial flat washers in the U.S.A. They are characterized as having a loose fit, and have a larger outside diameter than SAE Flat washers. The USS designation was derived from the name “Unified Standard Series.” At the time, coarse threaded bolts were called USS bolts.

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Buy USS Flat Washers from one of our FCH Network Members
SupplierLocTypeMaterialFinishSizeDescriptionQty 
JET FITTINGCAUSS Flat WasherSteelGalvanized1 x 2 1/2 x 11/641x2-1/2x11/64 washer flat steel hot dip galvanized uss b18.22.125
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