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1 3/8 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 
GLFOHUSS Flat WasherSteelZinc/Clear1 3/81-3/8 uss flat stl zc b18.22.1 () () ()181
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AbabaCAUSS Flat WasherSteelPlain1 3/81 3/8 uss f/w stl pln (3-1/4 od) b18.22.195
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AbabaCAUSS Flat WasherSteelZinc/Clear1 3/81 3/8 uss f/w stl znc (3-1/4 od) b18.22.1124
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AbabaCAUSS Flat WasherSteelZinc/Clear1 3/81 3/8 uss f/w stl znc (3-1/4 od) b18.22.125
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JET FITTINGCAUSS Flat WasherSteelGalvanized1 3/81 3/8 washers flat washers uss steel flat washer hdg (inch) b18.22.19
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