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5/16 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 
AbabaCAUSS Flat WasherSteelBlack Oxide5/165/16 uss f/w extra thick hrd stl al-2000 black (7/8 od) b18.22.11213
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AbabaCAUSS Flat WasherSteelZinc/Yellow5/165/16 uss f/w hrd stl yel znc (7/8 od) b18.22.11000
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AbabaCAUSS Flat WasherSteelZinc/Yellow5/165/16 uss f/w hrd stl yel znc (7/8 od) b18.22.12
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AbabaCAUSS Flat WasherSteelZinc/Yellow5/165/16 uss f/w extra thick hrd stl yel znc (7/8 od) b18.22.12875
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AbabaCAUSS Flat WasherSteelPlain5/165/16 uss f/w al-2000 (black) stl (7/8 od) b18.22.12328
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AbabaCAUSS Flat WasherSteelZinc/Black5/165/16 uss f/w w/super seal stl blk znc (7/8 od) b18.22.180
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AbabaCAUSS Flat WasherSteelZinc/Clear5/16-1005/16 uss f/w (100/bag) stl znc (7/8 od) b18.22.12000
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GLFOHUSS Flat Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16 x .8755/16x.875 uss flat 18-8 s/s b18.22.1 () () ()2769
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GLFOHUSS Flat WasherGrade 8Zinc/Yellow5/165/16 uss flat gr 8 stl zy b18.22.1 () () ()21064
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GLFOHUSS Flat WasherSteelZinc/Clear5/165/16 uss flat stl zc b18.22.1 () () ()11850
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GLFOHUSS Flat WasherSteelPlain5/165/16 uss flat stl pln b18.22.1 () () ()4284
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GLFOHUSS Flat Washer316, 317, A4 StainlessPlain5/165/16 uss flat 316 s/s b18.22.1 () () ()559
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GLFOHUSS Flat WasherSteelFluoropolymer-Based (Xylan, Fluorokote, Teflon)5/165/16 uss flat stl teflon b18.22.1 () () ()790
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GLFOHUSS Flat WasherSteelZinc/Yellow5/165/16 uss flat thru-hard stl zy domestic b18.22.1 () () ()32
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GLFOHUSS Flat Washer316, 317, A4 StainlessPlain5/165/16 uss flat 316 s/s domestic b18.22.1 () () ()92
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GLFOHUSS Flat WasherGrade 5Zinc/Clear5/165/16 uss flat grade 5 stl zc b18.22.1 () () ()3176
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GLFOHUSS Flat WasherSteelGalvanized5/16 x 7/85/16x7/8 od uss flat -hdgalvanized b18.22.1 () () ()3564
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BHAMALUSS Flat WasherNylon (Polyamide)Plain5/16 x 3/45/16x3/4 uss flat .062tk nylon b18.22.1155
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BHAMALUSS Flat WasherBrassPlain5/165/16 uss flat small brass b18.22.147
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Irwin IndOntUSS Flat WasherSteelZinc/Clear5/165/16 uss flatwashers steel zinc trivalent clear b18.22.11650
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AbabaCAUSS Flat WasherSteelZinc/Yellow5/165/16 uss f/w hrd stl yel znc (7/8 od) b18.22.11200
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AbabaCAUSS Flat WasherSteelZinc/Yellow5/165/16 uss f/w hrd stl yel znc (7/8 od) b18.22.14
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AbabaCAUSS Flat WasherSteelZinc/Yellow5/165/16 uss f/w extra thick hrd stl yel znc (7/8 od) b18.22.1600
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Alma BoltMIUSS Flat WasherSteelGalvanized5/165/16 uss pattern hdg flat washer b18.22.1958
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Infasco DTXUSS Flat WasherSteelZinc/Clear5/165/16 uss flat washer b18.22.1 type-a/w std zclcom 1/4 b.s. ( hole)640
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Infasco DGAUSS Flat WasherSteelZinc/Clear5/165/16 uss flat washer b18.22.1 type-a/w std zclcom 1/4 b.s. ( hole)640
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3Q, Inc.ILUSS Flat WasherSteelZinc/Yellow5/165/16 uss flat washer thru-hardened 1050 steel .0002 zinc yellow b18.22.1310000
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JET FITTINGCAUSS Flat WasherSteelZinc/Clear5/165/16 uss flt wash stl thru-hard zn 850100 b18.22.12500
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JET FITTINGCAUSS Flat WasherSteelZinc/Clear5/165/16 uss f/w stl zinc DUSZP03120 b18.22.119431
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JET FITTINGCAUSS Flat WasherSteelGalvanized5/165/16 uss flt wash low stl hdg 345002 b18.22.15124
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QFCTXUSS Flat WasherSteelZinc/Yellow5/165/16 uss flat yellow zinc b18.22.118893
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QFCTXUSS Flat WasherSteelZinc/Clear5/165/16 uss flat triv zinc b18.22.1784
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QFCTXUSS Flat WasherSteelZinc/Clear5/165/16 uss flat triv zinc b18.22.1133313
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QFCTXUSS Flat WasherSteelZinc/Clear5/165/16 uss flat triv zinc b18.22.125032
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QFCTXUSS Flat WasherSteelZinc/Black5/165/16 uss flat steel black zinc b18.22.1500
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QFCTXUSS Flat Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 uss flat 18-8 s/s b18.22.151000
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QFCTXUSS Flat Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/165/16 uss flat 18-8 s/s b18.22.137800
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QFCTXUSS Flat WasherSteelGalvanized5/16 x 505/16 uss f/w hdg 50#/4150 b18.22.11
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QFCTXUSS Flat WasherSteelGalvanized5/165/16 hdg uss each 1#/83 aproxz b18.22.1430
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QFCTXUSS Flat WasherSteelZinc/Clear5/16 x 765/16 uss flat zinc (76/lb 3800/50lb) .375x.875x.083 b18.22.12
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QFCTXUSS Flat WasherSteelZinc/Clear5/16 x 765/16 uss flat zinc (76/lb 3800/50lb) .375x.875x.083 b18.22.11
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QFCTXUSS Flat WasherSteelZinc/Clear5/165/16 uss flat zinc each (76/lb) .375x.875x.083 b18.22.16537
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QFCTXUSS Flat WasherSteelZinc/Clear5/165/16 uss flat zinc each (76/lb) .375x.875x.083 b18.22.112545
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QFCTXUSS Flat WasherSteelZinc/Clear5/165/16 uss flat zinc each (76/lb) .375x.875x.083 b18.22.112447
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QFCTXUSS Flat WasherSteelZinc/Clear5/165/16 uss flat zinc each (76/lb) .375x.875x.083 b18.22.11945
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QFCTXUSS Flat WasherSteelZinc/Clear5/165/16 uss flat zinc each (76/lb) .375x.875x.083 b18.22.1900
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QFCTXUSS Flat WasherSteelZinc/Yellow5/165/16 yzp uss hard 372 b18.22.17189
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QFCTXUSS Flat WasherSteelZinc/Yellow5/165/16 yzp uss hard 372 b18.22.1200
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B & K FASTPAUSS Flat WasherSteelGalvanized5/165/16 uss flat washers hd galv b18.22.1585.02
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B & K FASTPAUSS Flat WasherGrade 8Zinc/Yellow5/165/16 uss thru-hard flat washers gr 8 z yellow b18.22.1153.939
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B & K FASTPAUSS Flat WasherSteelPlain5/165/16 uss flat washers plain b18.22.144.075
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B & K FASTPAUSS Flat WasherSteelZinc/Clear5/165/16 uss flat washers zinc b18.22.155.038
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QFCTXUSS Flat WasherSteelPlain5/165/16 pln uss hard washer b18.22.13700
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QFCTXUSS Flat WasherSteelPlain5/165/16 uss flat washer plain each 90 .375x.875x.083 b18.22.1726
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QFCTXUSS Flat WasherSteelGalvanized5/165/16 uss flat washer galvanized b18.22.1215
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QFCTXUSS Flat WasherSteelZinc/Clear5/165/16 uss flatwasher zinc b18.22.1830
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JET FITTINGCAUSS Flat Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16 x .875 x .083washer flat 5/16x.875x.083 stainless steel 18-8 uss b18.22.13785
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JET FITTINGCAUSS Flat WasherSteelZinc/Clear5/16 x .875 x .0835/16x.875x.083 flat washer steel zinc plated uss b18.22.125396
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JET FITTINGCAUSS Flat WasherSteelGalvanized5/165/16 washers flat washers uss steel flat washer hdg (inch) b18.22.1415
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JET FITTINGCAUSS Flat WasherSteelZinc/Clear5/165/16 washers flat washers (thru haroundened) uss steel flat washer (usa) thru-hardened zinc cr+3 (inch) b18.22.15
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WurthOntUSS Flat WasherSteelGalvanized5/16wsh flt uss a w st (hdg) 5/16 b18.22.1238
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THRDFASTFLUSS Flat WasherGrade 8Zinc/Yellow5/16gr8 USS f/w z&y domestic b18.22.18
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THRDFASTTNUSS Flat WasherSteelPlain5/16USS f/w b18.22.14,500
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THRDFASTALUSS Flat WasherSteelPlain5/16USS f/w b18.22.141
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THRDFASTMSUSS Flat WasherSteelPlain5/16USS f/w b18.22.184
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KBSTNUSS Flat WasherSteelPlain5/165/16 uss flat/w b18.22.112,870
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KBSTNUSS Flat WasherSteelZinc/Clear5/165/16 uss flat/w plated b18.22.19,794
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THRDFASTALUSS Flat WasherSteelGalvanized5/16USS f/w domestic hdg b18.22.12801
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THRDFASTALUSS Flat WasherSteelFluoropolymer-Based (Xylan, Fluorokote, Teflon)5/16USS f/w teflon blue b18.22.1173
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THRDFASTOKUSS Flat WasherSteelPlain5/16USS f/w b18.22.1100
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WSBKYUSS Flat WasherSteelPlain5/16q/washer flat uss a w all (mzyt) 5/16 b18.22.14,500
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MMFMIUSS Flat WasherSteelZinc/Yellow5/165/16 hard uss flat washer zdy usa domestic b18.22.15600
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MMFMIUSS Flat WasherSteelZinc/Yellow5/165/16 hard uss flat washer zinc yellow usa domestic b18.22.15600
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MMFMIUSS Flat WasherSteelZinc/Yellow5/165/16 hard uss flat washer zdy usa domestic b18.22.15600
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MMFMIUSS Flat WasherSteelZinc/Yellow5/165/16 hard uss flat washer zinc yellow usa domestic b18.22.15600
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All SizeTXUSS Flat WasherSteelGalvanized5/165/16 uss washer galv b18.22.198
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DavisILUSS Flat WasherSteelGalvanized5/165/16 uss flat washer-steel galvonized b18.22.15,000
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