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USS Flat Washers , Plain (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 
BHAMALUSS Flat WasherBrassPlain1/21/2 uss flat washer small brass b18.22.11741
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BHAMALUSS Flat WasherSteelPlain2 1/22 1/2 uss flat dom b18.22.119
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BHAMALUSS Flat WasherGrade 8Plain1 1/41-1/4 uss flat washer dom. gr 8 b18.22.1241
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BHAMALUSS Flat WasherSteelPlain2 1/22-1/2 uss flat b18.22.1110
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BHAMALUSS Flat WasherNylon (Polyamide)Plain5/16 x 3/45/16x3/4 uss flat .062tk nylon b18.22.1154
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BHAMALUSS Flat WasherBrassPlain5/165/16 uss flat small brass b18.22.158
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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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BHAMALUSS Flat WasherBrassPlain#8#8 uss flat small brass b18.22.1135
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AbabaCAUSS Flat WasherSteelPlain1-2 1/21 uss f/w stl pln (2-1/2 od) b18.22.1123
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AbabaCAUSS Flat WasherSteelPlain1 1/41 1/4 uss f/w stl pln (3 od) b18.22.165
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AbabaCAUSS Flat WasherSteelPlain1 1/81 1/8 uss f/w hrd stl pln (2-3/4 od) b18.22.11
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AbabaCAUSS Flat WasherSteelPlain2 1/2-52-1/2 uss f/w stl pln (5 od) b18.22.19
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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 WasherSteelPlain1 1/21 1/2 uss f/w stl pln (3-1/2 od) b18.22.194
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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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AbabaCAUSS Flat WasherSteelPlain1 3/41 3/4 uss f/w stl pln (4 od) b18.22.13
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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 WasherSteelPlain2 3/4-5 1/42-3/4 uss f/w stl pln (5-1/4 od) b18.22.11
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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 WasherSteelPlain3/83/8 uss f/w al-2000 (black) stl (1 od) b18.22.12304
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AbabaCAUSS Flat WasherSteelPlain3/8-13/8 uss f/w stl pln (1 od) b18.22.11510
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AbabaCAUSS Flat WasherSteelPlain1/2-1 3/81/2 uss f/w stl pln (1-3/8 od) b18.22.1117
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AbabaCAUSS Flat WasherSteelPlain5/8-1 3/45/8 uss f/w stl pln (1-3/4 od) b18.22.1248
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AbabaCAUSS Flat WasherSteelPlain3/43/4 uss f/w armor coated hrd stl (2 od) b18.22.110
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AbabaCAUSS Flat WasherSteelPlain3/4-23/4 uss f/w stl pln (2 od) b18.22.1983
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AbabaCAUSS Flat WasherSteelPlain7/8-2 1/47/8 uss f/w stl pln (2-1/4 od) b18.22.1282
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AbabaCAUSS Flat WasherSteelPlain2-4 1/22 uss f/w stl pln (4-1/2 od) b18.22.14
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AbabaCAUSS Flat WasherSteelPlain1/2-1 3/81/2 uss f/w stl pln (1-3/8 od) b18.22.1150
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SIIINUSS Flat WasherSteelPlain1/21/2 plain finish uss flat washer) b18.22.1577
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SIIINUSS Flat WasherGrade 5Plain5/85/8 uss flat washers low carbon plain b18.22.1216
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QFCTXUSS Flat WasherSteelPlain1/41/4 pln uss hard b18.22.17300
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QFCTXUSS Flat WasherSteelPlain3/83/8 uss flat plain each 67 .438x1.00x.083 b18.22.170
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QFCTXUSS Flat WasherSteelPlain3/83/8 uss flat plain each 67 .438x1.00x.083 b18.22.12950
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QFCTXUSS Flat WasherSteelPlain3/83/8 plain uss hard b18.22.13000
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QFCTXUSS Flat WasherSteelPlain7/167/16 uss flat plain each 41 .500x1.25x.083 b18.22.1972
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QFCTXUSS Flat WasherSteelPlain7/167/16 uss flat plain each 41 .500x1.25x.083 b18.22.1300
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QFCTXUSS Flat WasherSteelPlain7/167/16 plain uss hard b18.22.12300
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QFCTXUSS Flat WasherSteelPlain1/21/2 uss flat plain each 26 .562x1.375x.109 b18.22.1825
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QFCTXUSS Flat WasherSteelPlain1/21/2 uss flat plain each 26 .562x1.375x.109 b18.22.1219
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QFCTXUSS Flat WasherSteelPlain5/85/8 uss flat plain each 13 .688x1.75x.134 b18.22.135
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QFCTXUSS Flat WasherSteelPlain5/85/8 uss flat plain each 13 .688x1.75x.134 b18.22.1100
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QFCTXUSS Flat WasherSteelPlain3/43/4 uss flat plain each 9 .812x2.00x.148 b18.22.151
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QFCTXUSS Flat WasherSteelPlain3/43/4 uss flat plain each 9 .812x2.00x.148 b18.22.134
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QFCTXUSS Flat WasherSteelPlain3/43/4 pln uss hard b18.22.1151
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QFCTXUSS Flat WasherSteelPlain1 1/81 1/8 uss flat plain each 4.5 1.25x2.75x.165 b18.22.163
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QFCTXUSS Flat WasherSteelPlain1 1/41 1/4 uss flat plain each 1.375x3.0x.165 b18.22.1182
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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 Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain7/167/16 uss flat 304 ss b18.22.11223
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QFCTXUSS Flat Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/21/2 uss flat 18-8 s/s b18.22.129
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B & K FASTPAUSS Flat WasherSteelPlain1/21/2 uss flat washers heavy mc12 b18.22.1926
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B & K FASTPAUSS Flat WasherGrade 8Plain11 uss thru-hard flat washers gr 8 plain domestic b18.22.1451.27
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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 WasherSteelPlain5/165/16 uss flat washers plain b18.22.144.075
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B & K FASTPAUSS Flat WasherSteelPlain3/83/8 uss flat washers plain b18.22.120.955
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B & K FASTPAUSS Flat WasherSteelPlain1/21/2 uss flat washers plain b18.22.128.49
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B & K FASTPAUSS Flat WasherSteelPlain5/85/8 uss flat washers plain b18.22.1126.27
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B & K FASTPAUSS Flat WasherSteelPlain3/43/4 uss flat washers plain b18.22.1183.72
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B & K FASTPAUSS Flat WasherSteelPlain3/43/4 uss flat washers plain domestic b18.22.172
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B & K FASTPAUSS Flat WasherSteelPlain3/4 x 1/43/4 uss flat washers 1/4 thick b18.22.1300
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B & K FASTPAUSS Flat WasherSteelPlain7/87/8 uss flat washers plain b18.22.1301.35
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B & K FASTPAUSS Flat WasherSteelPlain11 uss flat washers plain b18.22.14342.94
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B & K FASTPAUSS Flat WasherSteelPlain1 1/81 1/8 uss flat washers plain b18.22.1815.03
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B & K FASTPAUSS Flat WasherSteelPlain1 1/41 1/4 uss flat washers plain b18.22.14948.05
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B & K FASTPAUSS Flat WasherSteelPlain1 1/21 1/2 uss flat washers plain b18.22.1620.7
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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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B & K FASTPAUSS Flat WasherSteelPlain1 3/41 3/4 uss flat washers plain b18.22.1217
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B & K FASTPAUSS Flat WasherSteelPlain1 7/81 7/8 uss flat washers plain b18.22.1242
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B & K FASTPAUSS Flat WasherSteelPlain2 1/42 1/4 uss flat washer plain b18.22.1109
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General FMIUSS Flat WasherSteelPlain7/167/16 uss fw gmw3200 b18.22.14021
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BHAMALUSS Flat WasherBrassPlain1/21/2 uss flat small brass b18.22.145
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BHAMFLUSS Flat WasherGrade 8Plain1 1/81-1/8 uss flat dom. gr 8 b18.22.1177
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BHAMALUSS Flat WasherNylon (Polyamide)Plain#6 x 5/16#6x5/16 uss flat .062tk nylon b18.22.11386
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BHAMTXUSS Flat Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2 x 1 1/41/2x1 1/4 uss flat 300 ser ss b18.22.1106
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BHAMTXUSS Flat WasherBrassPlain1/41/4 uss flat brass b18.22.1440
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BHAMALUSS Flat WasherAluminumPlain3/4 x 2 5/323/4x2 1/2 uss flat 5/32tk alum b18.22.113
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OSSCORIUSS Flat WasherCopperPlain1212 flat uss copper b18.22.161
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OSSCORIUSS Flat Washer316, 317, A4 StainlessPlain11 flat uss special dimensions 316 s/s b18.22.18
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OSSCORIUSS Flat WasherBrassPlain#12 x .227#12 flat uss .227x.562 brass b18.22.142
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OSSCORIUSS Flat Washer316, 317, A4 StainlessPlain1 1/21-1/2 flat uss 316 s/s b18.22.14
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OSSCORIUSS Flat WasherNylon (Polyamide)Plain1 1/21-1/2 flat uss special dimensions nylon b18.22.12,035
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OSSCORIUSS Flat WasherBrassPlain3/83/8 flat uss large od brass b18.22.15
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OSSCORIUSS Flat WasherAluminumPlain3/83/8 flat uss alum b18.22.112
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OSSCORIUSS Flat WasherBrassPlain#4#4 flat uss brass b18.22.11,600
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OSSCORIUSS Flat WasherAluminumPlain5/85/8 flat uss alum b18.22.164
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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 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 WasherSteelPlain1/21/2 plain uss hard washer b18.22.1782
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QFCTXUSS Flat WasherSteelPlain7/87/8 plain uss hard washer b18.22.1236
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QFCTXUSS Flat WasherSteelPlain11 uss flatwasher plain each 5.3 1.062x2.50x.165 b18.22.1275
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QFCTXUSS Flat WasherSteelPlain11 plain uss hard washer b18.22.172
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QFCTXUSS Flat WasherSteelPlain11 uss flat washer plain/light oil b18.22.1215
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QFCTXUSS Flat WasherSteelPlain9/169/16 uss flat washer plain each .625x1.469x.109 b18.22.1630
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QFCTXUSS Flat WasherSteelPlain5/85/8 pln uss hard washer b18.22.146
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QFCTXUSS Flat WasherSteelPlain1 1/21 1/2 uss flat washer plain each 2.6/lb 130/bx1.625x3.50x.180 b18.22.190
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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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QFCTXUSS Flat Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/83/8 uss flat washer 18-8 s/s b18.22.13000
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QFCTXUSS Flat Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/83/8 uss flat washer 304 ss b18.22.1611
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QFCTXUSS Flat WasherSteelPlain5/85/8 uss flat washer plain b18.22.1100
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BCSBCAUSS Flat Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain.438 x 1 x .064.438x 1x .064/.104 thick flat washer stainless steel usa b18.22.13,000
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WurthOntUSS Flat WasherSteelPlain3/4wsh flt uss a w rc45 (pl) 3/4 b18.22.1160
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WurthOntUSS Flat WasherSteelPlain3/16wsh flt uss a w st (pl) 3/16 b18.22.112842
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WurthOntUSS Flat WasherSteelPlain7/8wsh flt uss a w st (pl) 7/8 b18.22.1110
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THRDFASTFLUSS Flat WasherSteelPlain33 USS f/w b18.22.11,074
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THRDFASTFLUSS Flat WasherSteelPlain2 3/4USS f/w b18.22.1237
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THRDFASTFLUSS Flat WasherSteelPlain2 1/4USS f/w b18.22.1125
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THRDFASTFLUSS Flat WasherSteelPlain1 7/8USS f/w b18.22.184
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THRDFASTFLUSS Flat WasherGrade 8Plain9/16gr 8 USS f/w b18.22.149
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THRDFASTFLUSS Flat WasherGrade 8Plain1 1/2gr 8 USS f/w b18.22.14
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THRDFASTFLUSS Flat WasherGrade 8Plain5/8gr 8 USS f/w b18.22.1180
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THRDFASTFLUSS Flat WasherGrade 8Plain3/4gr 8 USS f/w b18.22.14
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THRDFASTFLUSS Flat WasherGrade 8Plain1 1/4gr 8 USS f/w b18.22.12
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THRDFASTFLUSS Flat WasherSteelPlain22 USS f/w b18.22.13
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THRDFASTFLUSS Flat WasherSteelPlain2 1/2USS f/w b18.22.13
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THRDFASTOKUSS Flat WasherGrade 8Plain3/4gr 8 USS f/w b18.22.1300
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THRDFASTOKUSS Flat WasherSteelPlain1 3/8USS f/w b18.22.1105
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THRDFASTOKUSS Flat WasherSteelPlain1 1/4USS f/w b18.22.164
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THRDFASTOKUSS Flat WasherSteelPlain1 1/2USS f/w b18.22.120
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THRDFASTOKUSS Flat WasherSteelPlain11 USS f/w domestic b18.22.112
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THRDFASTFLUSS Flat WasherGrade 8Plain1 3/8gr 8 USS f/w b18.22.12
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THRDFASTTNUSS Flat WasherSteelPlain5/16USS f/w b18.22.14,500
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THRDFASTTNUSS Flat WasherSteelPlain22 USS f/w b18.22.134
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THRDFASTTNUSS Flat WasherGrade 8Plain22 gr 8 USS f/w b18.22.14
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KBSTNUSS Flat WasherSteelPlain5/85/8 uss flat/w b18.22.14,378
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KBSTNUSS Flat WasherSteelPlain5/165/16 uss flat/w b18.22.112,870
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KBSTNUSS Flat WasherSteelPlain1/21/2 !hardened! uss flat/w b18.22.11,148
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KBSTNUSS Flat WasherSteelPlain5/85/8 !hardened! uss flat/w b18.22.11,304
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KBSTNUSS Flat WasherSteelPlain1 1/21-1/2 uss flat/w b18.22.1630
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KBSTNUSS Flat WasherSteelPlain1 1/41-1/4 uss flat/w b18.22.1891
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KBSTNUSS Flat WasherSteelPlain1/41/4 uss flat/w b18.22.142,816
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KBSTNUSS Flat WasherSteelPlain1/21/2 uss flat/w b18.22.118,716
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THRDFASTALUSS Flat WasherSteelPlain22 USS f/w b18.22.150
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THRDFASTFLUSS Flat WasherSteelPlain22 USS f/w b18.22.16
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THRDFASTOKUSS Flat WasherSteelPlain7/16USS f/w b18.22.1100
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THRDFASTOKUSS Flat WasherSteelPlain22 USS f/w b18.22.126
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THRDFASTFLUSS Flat WasherGrade 8Plain1 1/4gr 8 USS f/w b18.22.15
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THRDFASTALUSS Flat WasherGrade 8Plain1 1/8gr 8 USS f/w b18.22.17
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THRDFASTMSUSS Flat WasherSteelPlain9/16USS f/w b18.22.162
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THRDFASTOKUSS Flat WasherSteelPlain5/16USS f/w b18.22.1100
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THRDFASTOKUSS Flat WasherSteelPlain9/16USS f/w b18.22.188
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THRDFASTOKUSS Flat WasherSteelPlain2 1/2USS f/w b18.22.14
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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 WasherSteelPlain5/8q/washer flat uss a w all (mzyt) 5/8 b18.22.1574
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WSBKYUSS Flat WasherSteelPlain7/16q/washer flat uss a w all (mzyt) 7/16 b18.22.11,570
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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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WSBKYUSS Flat WasherSteelPlain9/16q/washer flat uss a w all (mzyt) 9/16 b18.22.1920
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WSBKYUSS Flat WasherSteelPlainq/washer flat uss a w rc45 (mzyt) 5/16 b18.22.1500
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MMFMIUSS Flat WasherSteelPlain3/83/8 hard uss flat washer zdy usa domestic b18.22.13600
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MMFMIUSS Flat WasherSteelPlain9/169/16 hard uss flat washer zdy usa domestic b18.22.11410
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MMFMIUSS Flat WasherSteelPlain5/85/8 hard uss flat washer zdy usa domestic b18.22.1785
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MMFMIUSS Flat WasherSteelPlain7/167/16 hard uss flat washer zdy usa domestic b18.22.12450
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MMFMIUSS Flat WasherSteelPlain hard uss flat washer zdy usa domestic b18.22.11500
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MMFMIUSS Flat WasherSteelPlain hard uss flat washer zdy usa domestic b18.22.11500
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MMFMIUSS Flat WasherSteelPlain5/85/8 hard uss flat washer zdy usa domestic b18.22.1785
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MMFMIUSS Flat WasherSteelPlain3/83/8 hard uss flat washer zdy usa domestic b18.22.13600
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MMFMIUSS Flat WasherSteelPlain9/169/16 hard uss flat washer zdy usa domestic b18.22.11410
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MMFMIUSS Flat WasherSteelPlain7/167/16 hard uss flat washer zdy usa domestic b18.22.12450
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Wurth IndD.F.USS Flat WasherGrade 5Plain3/43/4 uss pattern flat washer plain low carbon steel dimension per asme b18.22.1 type-a wide420
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All SizeTXUSS Flat WasherSteelPlain1 5/81 5/8 uss flat washer plain b18.22.17
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All SizeTXUSS Flat Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1 1/21 1/2 uss flat washer s/s b18.22.150
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All SizeTXUSS Flat WasherSteelPlain33 uss flat washer plain b18.22.123
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All SizeTXUSS Flat Washer300 Stainless (A1,A2, 18-8,304,310 etc.)Plain22 uss flat washer s/s b18.22.119
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All SizeTXUSS Flat WasherSteelPlain1 3/81 3/8 uss flat washer plain b18.22.1138
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All SizeTXUSS Flat WasherGrade 8Plain3/43/4 gr. 8 uss flat washer domestic b18.22.12
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