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1 5/8 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 5/81-5/8 uss flat stl zc b18.22.1 () () ()18
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AbabaCAUSS Flat WasherSteelPlain1 5/81 5/8 uss f/w stl pln (3-3/4 od) b18.22.134
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JET FITTINGCAUSS Flat WasherSteelGalvanized1 5/81 5/8 uss flt wash low stl hdg 345015 b18.22.18
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B & K FASTPAUSS Flat WasherSteelPlain1 5/81 5/8 uss flat washers plain b18.22.1631
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B & K FASTPAUSS Flat WasherSteelPlain1 5/81 5/8 uss flat washers plain-domestic b18.22.115
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THRDFASTALUSS Flat WasherSteelZinc/Clear1 5/8USS f/w b18.22.12
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All SizeTXUSS Flat WasherSteelPlain1 5/81 5/8 uss flat washer plain b18.22.17
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