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1/4 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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SupplierLocTypeMaterialFinishSizeDescriptionQty 
Irwin IndOntUSS Flat WasherSteelZinc/Clear1/41/4 uss flatwashers steel zinc trivalent clear b18.22.1 17677
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GLFOHUSS Flat WasherSteelPlain1/41/4 uss flat stl pln b18.22.1 () () ()4620
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GLFOHUSS Flat Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/41/4 uss flat 18-8 s/s b18.22.1 () () ()1992
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GLFOHUSS Flat WasherSteelZinc/Black1/41/4 uss flat stl zinc black b18.22.1 () () ()5675
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GLFOHUSS Flat WasherSteelZinc/Clear1/41/4 uss flat stl zc crz3 b18.22.1 () () ()24123
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GLFOHUSS Flat WasherGrade 8Zinc/Yellow1/41/4 uss flat gr 8 stl zy b18.22.1 () () ()9710
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GLFOHUSS Flat WasherSteelGalvanized1/41/4 uss flat stl hdg b18.22.1 () () ()15203
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GLFOHUSS Flat WasherSteelFluoropolymer-Based (Xylan, Fluorokote, Teflon)1/41/4 uss flat stl teflon b18.22.1 () () ()207
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GLFOHUSS Flat WasherSteelZinc/Yellow1/41/4 uss flat thru-hard stl zy domestic b18.22.1 () () ()128
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GLFOHUSS Flat Washer316, 317, A4 StainlessPlain1/41/4 uss flat 316 s/s b18.22.1 () () ()1554
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GLFOHUSS Flat WasherGrade 5Zinc/Clear1/41/4 uss flat grade 5 stl zc b18.22.1 () () ()1971
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BHAMALUSS Flat WasherNylon (Polyamide)Plain1/4 x 1/21/4x1/2 uss flat .032tk nylon b18.22.178
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GLFOHUSS Flat Washer316, 317, A4 StainlessPlain1/41/4 uss flat 316 s/s domestic b18.22.1 () () ()92
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AbabaCAUSS Flat WasherSteelPlain1/41/4 extra thick high alloy uss flat washer al-2000 black b18.22.11364
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AbabaCAUSS Flat WasherSteelZinc/Yellow1/41/4 uss f/w hrd stl yel znc (3/4 od) b18.22.15920
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AbabaCAUSS Flat WasherSteelZinc/Yellow1/4 x 251/4 uss f/w 25/pkg hrd stl yel znc (3/4 od) b18.22.19
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AbabaCAUSS Flat WasherSteelZinc/Yellow1/41/4 uss f/w extra thick hrd stl yel znc (3/4 od) b18.22.14250
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ASMCILUSS Flat WasherSteelPlain1/4flat USS pattern low carb b18.22.15,408
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ASMCILUSS Flat WasherGrade 9Zinc/Clear1/4gr9 tension flat USS pattern pfc9-usa zp b18.22.14,540
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ASMCILUSS Flat WasherGrade 8Plain1/41/4 gr8 flat uss pattern-usa med carb pln b18.22.14,500
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ASMCILUSS Flat WasherGrade 8Zinc/Clear1/4gr8 flat USS pattern-usa med carb zp b18.22.1555
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AbabaCAUSS Flat WasherSteelZinc/Yellow1/41/4 uss f/w hrd stl yel znc (3/4 od) b18.22.12200
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AbabaCAUSS Flat WasherSteelZinc/Yellow1/4 x 251/4 uss f/w 25/pkg hrd stl yel znc (3/4 od) b18.22.16
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AbabaCAUSS Flat WasherSteelZinc/Yellow1/41/4 uss f/w extra thick hrd stl yel znc (3/4 od) b18.22.1400
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3Q, Inc.ILUSS Flat WasherSteelZinc/Yellow1/41/4 uss flat washer thru-hardened 1050 steel .0002 zinc yellow b18.22.1224000
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JET FITTINGCAUSS Flat WasherSteelBlack Oxide1/41/4 uss f/w steel blk ox 14WUSSB b18.22.124723
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JET FITTINGCAUSS Flat WasherSteelZinc/Clear1/41/4 uss f/w stl zinc 344002 b18.22.155639
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StandardMAUSS Flat WasherSteelZinc/Clear1/41/4 uss flat washer zinc plated steel b18.22.170
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QFCTXUSS Flat WasherSteelPlain1/41/4 pln uss hard b18.22.17300
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QFCTXUSS Flat WasherSteelZinc/Yellow1/41/4 uss flat zinc yellow b18.22.1111680
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QFCTXUSS Flat WasherSteelZinc/Yellow1/41/4 uss flat zinc yellow b18.22.140098
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QFCTXUSS Flat WasherSteelZinc/Clear1/41/4 uss flat triv zinc b18.22.123800
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QFCTXUSS Flat WasherSteelZinc/Clear1/41/4 uss flat triv zinc b18.22.122389
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QFCTXUSS Flat WasherSteelGalvanized1/41/4 uss flat galvanized b18.22.15059
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QFCTXUSS Flat WasherSteelGalvanized1/41/4 uss f/w hdg b18.22.11
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QFCTXUSS Flat WasherSteelZinc/Clear1/4 x 149 .312 x .7341/4 uss flat zinc per ea 149 .312x.734x.065 b18.22.113412
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QFCTXUSS Flat WasherSteelZinc/Clear1/4 x 149 .312 x .7341/4 uss flat zinc per ea 149 .312x.734x.065 b18.22.17962
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QFCTXUSS Flat WasherSteelZinc/Clear1/4 x 149 .312 x .7341/4 uss flat zinc per ea 149 .312x.734x.065 b18.22.17942
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QFCTXUSS Flat WasherSteelZinc/Clear1/4 x 149 .312 x .7341/4 uss flat zinc per ea 149 .312x.734x.065 b18.22.138
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QFCTXUSS Flat WasherSteelZinc/Clear1/4 x 149 .312 x .7341/4 uss flat zinc per ea 149 .312x.734x.065 b18.22.12100
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QFCTXUSS Flat WasherSteelZinc/Yellow1/41/4 uss hard yellow zinc b18.22.1523
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B & K FASTPAUSS Flat WasherSteelGalvanized1/41/4 uss flat washers hd galv b18.22.1734.29
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B & K FASTPAUSS Flat WasherGrade 8Zinc/Yellow1/41/4 uss thru-hard flat washers gr 8 z yellow b18.22.1184.4208591
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B & K FASTPAUSS Flat WasherSteelPlain1/41/4 uss flat washers plain b18.22.186.031
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B & K FASTPAUSS Flat WasherSteelZinc/Clear1/41/4 uss flat washers zinc b18.22.16311.328422877
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General FMIUSS Flat WasherSteelZinc/Clear1/41/4 uss fw zn b18.22.1111,787
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BHAMTXUSS Flat WasherBrassPlain1/41/4 uss flat brass b18.22.1440
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OSSCORIUSS Flat WasherGrade 2Zinc/Black1/41/4 flat uss grade 2 black zinc b18.22.1200
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QFCTXUSS Flat WasherSteelPlain1/41/4 uss flat washer plain each 149 .312x.734x.065 b18.22.111837
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QFCTXUSS Flat WasherSteelZinc/Yellow1/41/4 uss flat washer zinc/yellow b18.22.17167
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QFCTXUSS Flat WasherSteelZinc/Black1/41/4 uss flat washer steel black zinc b18.22.1500
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QFCTXUSS Flat Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/41/4 uss flat washer 18-8 stainless steel b18.22.1400
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JET FITTINGCAUSS Flat WasherSteelBlack Oxide1/4 x .750 x .0621/4x.750x.062 flat washer steel black oxide uss b18.22.113000
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JET FITTINGCAUSS Flat Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4 x .750 x .0621/4x.750x.062 flat washer stainless steel 18-8 uss b18.22.1935
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JET FITTINGCAUSS Flat WasherSteelZinc/Clear1/4 x .750 x .0621/4x.750x.062 flat washer steel zinc plated uss b18.22.13704
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WurthOntUSS Flat WasherSteelGalvanized1/4wsh flt uss a w st (hdg) 1/4 b18.22.1682
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THRDFASTFLUSS Flat WasherGrade 8Zinc/Yellow1/4gr8 USS f/w z&y domestic b18.22.182
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THRDFASTTNUSS Flat WasherSteelGalvanized1/4USS f/w hdg b18.22.1546
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THRDFASTALUSS Flat WasherSteelCadmium1/4USS f/w b18.22.156
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KBSTNUSS Flat WasherSteelZinc/Clear1/41/4 uss flat/w pltd b18.22.150,308
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KBSTNUSS Flat WasherSteelPlain1/41/4 uss flat/w b18.22.142,816
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THRDFASTMSUSS Flat WasherSteelZinc/Yellow1/4USS f/w z&y domestic b18.22.150
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THRDFASTALUSS Flat WasherSteelFluoropolymer-Based (Xylan, Fluorokote, Teflon)1/4USS f/w teflon blue b18.22.1323
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THRDFASTOKUSS Flat WasherSteelZinc/Clear1/4USS f/w domestic b18.22.15,981
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THRDFASTMSUSS Flat WasherSteelFluoropolymer-Based (Xylan, Fluorokote, Teflon)1/4USS f/w teflon blue b18.22.1184
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WSBKYUSS Flat WasherSteelPlain1/4q/washer flat uss a w all (mzyt) 1/4 b18.22.14,900
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WSBKYUSS Flat WasherSteelNickel Plated1/4washer flat uss a w st (ni) 1/4 b18.22.16,630
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All SizeTXUSS Flat WasherSteelGalvanized1/41/4 uss flat washer galv b18.22.15,990
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