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2 3/4 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 
AbabaCAUSS Flat WasherSteelPlain2 3/4-5 1/42-3/4 uss f/w stl pln (5-1/4 od) b18.22.11
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THRDFASTFLUSS Flat WasherSteelPlain2 3/4USS f/w b18.22.1237
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THRDFASTALUSS Flat WasherSteelPlain2 3/4USS f/w b18.22.14
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THRDFASTOKUSS Flat WasherSteelGalvanized2 3/4USS f/w hdg b18.22.14
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