Flat Washer (ASME 18.22.1)
Flat Washers, or just Plain Washers, are a flat annulus or ring, often of metal, used to spread the load from the head of a screwed fastening to the base material. Flat washers are used to increase the bearing surface of a nut or fastener's head thus spreading the clamping force over a larger area.
Flat Washer (b18.22.1), showing 200, (click on any line for more information)
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| Endries | WI | Flat Washer | Steel | Zinc/Clear | M3 | M3 flat zinc din 7349 | 1031 |
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| Endries | WI | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8 x 1 | 3/8x1 flat 18-8ss | 1000 |
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| Endries | WI | Flat Washer | Grade 8 | Zinc/Clear | 3/4 | 3/4 grade 8 standard flat trivalent clear zinc domestic | 400 |
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| Endries | WI | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .254 | .254/.264x.470/.480x .027/.033 18-8 s/s steel flat | 1645 |
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| Century | FL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M12 | m12 flat washer s/s e2a | 320 |
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| Century | FL | Flat Washer | Steel | Zinc/Clear | M3 | m3 flat washer stl zinc bn713 | 1500 |
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| Century | FL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Passivated | 446+/-.005 570 +/-.005 x .020 +/-.003 18-8 s/s passivated f/w | 1186 |
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| Century | FL | Flat Washer | Plain | 0.203 x .438 x .063 | nas1149d0363k | 130 |
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| Century | FL | Flat Washer | Titanium | Plain | 0.265 x .500 x .063 | nas1149v0463h washer | 3 |
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| Century | FL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 304 ss washer | 5060 |
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| OneMonroe | NC | Flat Washer | Nylon (Polyamide) | Plain | 1/2 | 1/2 id nylon washer | 250 |
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| OneMonroe | NC | Flat Washer | Silicon Bronze | Plain | 3/8 | 3/8 flat washer sili brze | 100 |
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| OneMonroe | NC | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8 | 3/8 washer type-b wide stainless | 117 |
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| OneMonroe | NC | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Zinc/Clear | 5/16 | washer 5/16 flat 7/8 od .062 thk stainless zinc plated | 385 |
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| Endries | WI | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .847 | .847/.853x1.115/1.135x .120/.130 18-8 s/s steel annealed flat | 448 |
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| Endries | WI | Flat Washer | Nylon (Polyamide) | Plain | M3.2 x 8.0 x 0.8 | f/w m3.2xm8.0xm0.8 nylon | 6000 |
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| Cal Fastenrs | CA | Flat Washer | Steel | Tin Plated | 3/8 | small pattern f/w -brass - 24-s | 150 |
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| Cal Fastenrs | CA | Flat Washer | Brass | Plain | #12 | small pattern f/w 12-s | 322 |
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| Cal Fastenrs | CA | Flat Washer | Silicon Bronze | Plain | #10 | small pattern f/w silican brze f/w s.b. | 375 |
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| Cal Fastenrs | CA | Flat Washer | Brass | Plain | #4 | small pattern f/w brass f/w | 1,300 |
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| Cal Fastenrs | CA | Flat Washer | Brass | Plain | 6 | large pattern f/w -l 72c fred | 10,404 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .350 x .870 | .350 x .870 special dimension flat | washer .062 thick 18.8 stainless steel | washer .062 thick 18.8 stainless steel | washer .062 thick 18.8 stainless steel | 139500 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .375 x 1.000 | .375 x 1.000 special dimension flat | washer .050 thick 18.8 stainless steel | washer .050 thick 18.8 stainless steel | washer .050 thick 18.8 stainless steel | 254055 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .375 x 1.000 | .375 x 1.000 special dimension flat | washer .180 thick 18.8 stainless steel | washer .180 thick 18.8 stainless steel | washer .180 thick 18.8 stainless steel | 165 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .375 x 1.500 | .375 x 1.500 special dimension flat | washer .125 thick 18.8 stainless steel | washer .125 thick 18.8 stainless steel | washer .125 thick 18.8 stainless steel | 1200 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .375 x .875 | .375 x .875 special dimension flat | washer .078 thick 18.8 stainless steel | washer .078 thick 18.8 stainless steel | washer .078 thick 18.8 stainless steel | 23400 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .380 x .750 | .380 x .750 special dimension flat | washer .060 thick 18.8 stainless steel | washer .060 thick 18.8 stainless steel | washer .060 thick 18.8 stainless steel | 13300 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .390 x 1.000 | .390 x 1.000 special dimension flat | washer .120 thick 18.8 stainless steel | washer .120 thick 18.8 stainless steel | washer .120 thick 18.8 stainless steel | 7500 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Chrome Plated | .390 x .875 | .390 x .875 special dimension flat | washer .100 thick 18.8 stainless steel chrome plate | washer .100 thick 18.8 stainless steel chrome plate | washer .100 thick 18.8 stainless steel chrome plate | -939 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .406 x 1.000 | .406 x 1.000 special dimension flat | washer .062 thick 18.8 stainless steel | washer .062 thick 18.8 stainless steel | washer .062 thick 18.8 stainless steel | 32500 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .406 x 1.250 | .406 x 1.250 special dimension flat | washer .100 thick 18.8 stainless steel | washer .100 thick 18.8 stainless steel | washer .100 thick 18.8 stainless steel | 3450 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .469 x .875 | .469 x .875 special dimension flat | washer .063 thick 18.8 stainless steel | washer .063 thick 18.8 stainless steel | washer .063 thick 18.8 stainless steel | 3608 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .500 x 1.375 | .500 x 1.375 special dimension flat | washer .103 thick 18.8 stainless steel | washer .103 thick 18.8 stainless steel | washer .103 thick 18.8 stainless steel | 5624 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .530 x 1.440 | .530 x 1.440 special dimension flat | washer .150 thick 18.8 stainless steel | washer .150 thick 18.8 stainless steel | washer .150 thick 18.8 stainless steel | 2997 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .531 x 1.000 | .531 x 1.000 special dimension flat | washer .125 thick 18.8 stainless steel | washer .125 thick 18.8 stainless steel | washer .125 thick 18.8 stainless steel | 37921 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .531 x 2.000 | .531 x 2.000 special dimension flat | washer .190 thick 18.8 stainless steel | washer .190 thick 18.8 stainless steel | washer .190 thick 18.8 stainless steel | -4156 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .562 x 2.000 | .562 x 2.000 special dimension flat | washer .125 thick 18.8 stainless steel | washer .125 thick 18.8 stainless steel | washer .125 thick 18.8 stainless steel | -917 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .567 x 1.387 | .567 x 1.387 special dimension flat | washer .099 thick 18.8 stainless steel | washer .099 thick 18.8 stainless steel | washer .099 thick 18.8 stainless steel | 775 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .595 x 1.250 | .595 x 1.250 special dimension flat | washer .030 thick 18.8 stainless steel | washer .030 thick 18.8 stainless steel | washer .030 thick 18.8 stainless steel | 1250 |
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| Brikksen | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .630 x 1.312 | .630 x 1.312 special dimension flat | washer .250 thick 18.8 stainless steel | washer .250 thick 18.8 stainless steel | washer .250 thick 18.8 stainless steel | 1060 |
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| Brikksen | Flat Washer | Steel | Zinc/Clear | .190 x .500 | .190 x .500 special dimension flat | washer .040 thick steel zinc clear trivalent | washer .040 thick steel zinc clear trivalent | washer .040 thick steel zinc clear trivalent | 100188 |
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| MetricThrd | CA | Flat Washer | Silicon Bronze | Plain | M8 | m 8 din 125-brnz flat washers | 6,250 |
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| MetricThrd | CA | Flat Washer | Nylon (Polyamide) | Plain | M5 | m 5 din 125-nylon flat washers black | stock |
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| MetricThrd | CA | Flat Washer | Nylon (Polyamide) | Plain | M6 | m 6 din 125-nylon blk flat washer | 500 |
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| MetricThrd | CA | Flat Washer | Nylon (Polyamide) | Plain | M6 x 14 | m 6 x 14 nylon flat washer black | stock |
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| MetricThrd | CA | Flat Washer | Nylon (Polyamide) | Plain | M8 | m 8 din 125-nylon blk flat washer | stock |
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| MetricThrd | CA | Flat Washer | Nylon (Polyamide) | Plain | M10 x 22 | m10 x 22 nylon flat washer black | stock |
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| MetricThrd | CA | Flat Washer | Steel | Zinc/Clear | M12.5 x 22 x 2.5 | m12.5 x 22 x 2.5 st-zn heavy washers | 5,860 |
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| Bossard | AZ | Flat Washer | Plain | flat washer m4 w/o chamfer | 373 |
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| Bossard | AZ | Flat Washer | 316, 317, A4 Stainless | Plain | flat washer 316 stainless | 43753 |
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| Bossard | AZ | Flat Washer | Plain | flatwasher bn671 | 1000 |
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| Bossard | AZ | Flat Washer | Plain | flat washer w/o chamfer | 3988 |
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| Bossard | AZ | Flat Washer | Steel | Plain | flat washer without chamfer bn729 | 28067 |
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| Bossard | AZ | Flat Washer | Steel | Zinc/Clear | .437x1.00x.072 flatwasher steel zinc | 41535 |
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| Bossard | AZ | Flat Washer | Plain | flatwasher bn20730 | 1000 |
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| Bossard | AZ | Flat Washer | Plain | flat washer w/o chamfer | 800 |
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| Bossard | AZ | Flat Washer | Fiber | Plain | washer fiber flat .1998 id .312 od | 200 |
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| Bossard | AZ | Flat Washer | Steel | Plain | flatwasher | 1075 |
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| Bossard | AZ | Flat Washer | Steel | Black Oxide | flatwasher .315 x .126 x .031 blk | 80950 |
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| MESAFAST | CA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 960 | an c616 3/8 flat 18-8 s/s | 404.0 |
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| MESAFAST | CA | Flat Washer | Brass | Plain | #6-s (.312 o.d.) flat | 1.5 |
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| MESAFAST | CA | Flat Washer | Rubber, Buna-N, Neoprene etc. | Plain | #14 x 1 /2 | #14 (x 1/2 od) epdm neoprene | 5.0 |
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| Global | CA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 0.515 x 0.875 x 0.063 | 5710-95-60 flat round washer ss 0.875 od x 0.515 id x 0.063 th | 960 |
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| Global | CA | Flat Washer | Nylon (Polyamide) | Plain | 0.196 x 0.575 x 0.152 | 11sfw0010 black washer nylon 0.575 od x 0.152 th x 0.196 id | 47,835 |
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| Global | CA | Flat Washer | Plastic | Plain | 16fw250062 microplastics flat washer ny | 561 |
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| Global | CA | Flat Washer | Plastic | Plain | 0.125 x 0.250 x 0.062 | 17w02508 microplastics flat washer ny 0.250 od x 0.125 id x 0.062 th | 75,855 |
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| Global | CA | Flat Washer | Plastic | Plain | 16m02050080 micro plastics washer | 380 |
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| Global | CA | Flat Washer | Plastic | Plain | 16fw002032 microplastics flat washer ny | 4,200 |
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| Global | CA | Flat Washer | Plastic | Plain | 17w03753 microplastics flat washer ny | 125 |
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| Global | CA | Flat Washer | Plastic | Plain | 17w04404 microplastics flat washer ny | 480 |
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| Global | CA | Flat Washer | Plastic | Plain | 0.188 x 0.505 | 17w05008 microplastics flat washer ny 0.505 od x 0.188 | 900 |
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| Global | CA | Flat Washer | Nylon (Polyamide) | Plain | 0.375 x 0.594 x 0.062 | 16fwrt250062 retaining washer nylon 0.594 od x 0.375 id x 0.062 th | 458 |
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| Global | CA | Flat Washer | Plastic | Plain | 17w03750 microplastics flat washer ny | 973 |
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| Global | CA | Flat Washer | Plastic | Plain | 17w01815 microplastics flat washer ny | 600 |
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| Global | CA | Flat Washer | Nylon (Polyamide) | Plain | 0.115 x 0.406 x 0.031 | 16fwrt002032 retaining washer nylon 0.406 od x 0.115 id x 0.031 th | 2,052 |
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| Global | CA | Flat Washer | Plastic | Plain | 16fw008062 microplastics flat washer ny | 802 |
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| Global | CA | Flat Washer | Plastic | Plain | 16fw250032 microplastics flat washer ny | 3,125 |
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| Global | CA | Flat Washer | Plastic | Plain | 17w02350 microplastics flat washer ny | 3,067 |
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| Global | CA | Flat Washer | Plastic | Plain | 17w02815 microplastics flat washer ny | 490 |
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| Global | CA | Flat Washer | Plastic | Plain | 17w07192 microplastics flat washer ny | 10,000 |
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| Global | CA | Flat Washer | Nylon (Polyamide) | Plain | 0.156 x 0.266 x 0.031 | 16fwrt004032 retaining washer nylon 0.266 od x 0.156 id x 0.031 th | 930 |
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| Global | CA | Flat Washer | Plastic | Plain | 17w04720 microplastics flat washer ny | 1,809 |
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| MidStates | MI | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M12 | f/w 18-8 din 7349 | 1 |
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| MidStates | MI | Flat Washer | Brass | Plain | 1 1/2 x 1.562 x 3.500 | 1-1/2x1.562idx3.500od f/w | 2 |
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| MidStates | MI | Flat Washer | Steel | Zinc/Clear | M10 | heavy flat znc | 11 |
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| MidStates | MI | Flat Washer | Steel | Plain | M1-3/4 x 4 | 1-3/4 4 head drive pin w/12 | 200 |
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| MidStates | MI | Flat Washer | Steel | Plain | iad-3/8 #35663 deburring cutter | 2 |
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| MidStates | MI | Flat Washer | Steel | Zinc/Clear | .130 | - | 50 |
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| MidStates | MI | Flat Washer | Grade 8 | Plain | 1/4 x 3 | 1/4x3/4 f/w .082 gr 8 | 1000 |
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| MidStates | MI | Flat Washer | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 7/8 f/w 20 | 25 |
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| MidStates | MI | Flat Washer | Steel | Zinc/Clear | M16 | weld znc | 100 |
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| MidStates | MI | Flat Washer | Steel | Plain | 6 x 1/2 x 1 6 | s fine light deburring wheel | 3 |
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| MidStates | MI | Flat Washer | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | M20-286 | M20 f/w a-286 | 20 |
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| MidStates | MI | Flat Washer | Steel | Plain | swc-3 reid swing c | 46 |
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| MidStates | MI | Flat Washer | Steel | Plain | 25/32 x 1 1 | 25/32x1 1/2 f/w .060 thk | 7 |
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| MidStates | MI | Flat Washer | Steel | Plain | 1 1/2 | hammer drive pin w/3/8 | 1300 |
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| MidStates | MI | Flat Washer | Steel | Plain | M1-1/4 x 4 | 1-1/4 4 head drive pin w/12 | 100 |
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| MidStates | MI | Flat Washer | Rubber, Buna-N, Neoprene etc. | Plain | rubber replace for univ coupler | 10 |
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| MidStates | MI | Flat Washer | Steel | Galvanized | 2 3/4 | f/w hdg | 26 |
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| Cal Fastenrs | CA | Flat Washer | Silicon Bronze | Plain | 1/4 | small pattern f/w silican brze f/w | 400 |
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| BAYFASTCO | FL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M2 | flat 18-8 304 din 125a | 3285 |
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| BAYFASTCO | FL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M4 | flat 18-8 din 433 | 3090 |
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| BAYFASTCO | FL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M5 | flat 18-8 304 din 125a | 3465 |
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| BAYFASTCO | FL | Flat Washer | Steel | Black Oxide | M5 | flat din 125a black oxide | 9529 |
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| BAYFASTCO | FL | Flat Washer | Nylon (Polyamide) | Plain | .094 x .188 x .02 | micro plastics nylon flat | 400 |
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| MidStates | SC | Flat Washer | Steel | Black Oxide | 3/16 x 7/16 x 5/64 | 3/16id x 7/16od x 5/64 thk f/w black ox | 687 |
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| MidStates | SC | Flat Washer | Steel | Zinc/Clear | M2.5 | m2.5 f/w din 125a znc | 117 |
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| CFI | IL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 0.39 x 1/2 x 0.03 | flat s flat | 6,000 |
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| CFI | IL | Flat Washer | Steel | Zinc/Clear | 0.252 x 1.13 x 0.037 | flat s flat | 5,000 |
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| CFI | IL | Flat Washer | Steel | Zinc/Clear | 0.316 x 0.65 x 0.05 | flat s flat | 2,500 |
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| CFI | IL | Flat Washer | Steel | Zinc/Clear | 8 | flat s flat | 23,750 |
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| CFI | IL | Flat Washer | Fiber | Plain | 0.288 x 9/16 x 0.015 | flat s grey | 18,000 |
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| CFI | IL | Flat Washer | Steel | Zinc/Clear | M10 | flat s | 5,500 |
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| CFI | IL | Flat Washer | Steel | Zinc/Clear | 1/4 | flat s flat | 43,350 |
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| CFI | IL | Flat Washer | Steel | Zinc/Clear | 4 | flat s flat | 5,000 |
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| CFI | IL | Flat Washer | Steel | Zinc/Clear | 0.155 x 3/8 x 0.036 | flat s flat | 25,000 |
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| CFI | IL | Flat Washer | Steel | Plain | 0.316 x 0.505 x 0.057 | flat s flat | 8,000 |
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| CFI | IL | Flat Washer | Fiber | Plain | 0.288 x 9/16 x 0.025 | flat s grey | 18,000 |
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| CFI | IL | Flat Washer | Steel | Zinc/Clear | 1/2 | flat s flat | 29,900 |
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| CFI | IL | Flat Washer | Fiber | Plain | 0.288 x 9/16 x 0.032 | flat s grey | 18,000 |
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| CFI | IL | Flat Washer | Steel | Zinc/Clear | 3/16 x 3/8 x 1/16 | flat s flat | 6,000 |
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| CFI | IL | Flat Washer | Steel | Zinc/Clear | 315/320 x 1/2 x 010 | 315/320 x 1/2 x 010 stl washer zinc | 9,285 |
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| CFI | IL | Flat Washer | 316, 317, A4 Stainless | Zinc/Clear | 316/322 x 500 x 016 spring washer zinc plate | 21,500 |
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| CFI | IL | Flat Washer | Steel | Zinc/Clear | 0.316 x 0.65 x 0.05 | flat s flat | 2,500 |
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| CFI | IL | Flat Washer | Steel | Zinc/Clear | 315/320 x 1/2 x 010 | 315/320 x 1/2 x 010 stl washer zinc | 9,285 |
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| CFI | IL | Flat Washer | Steel | Zinc/Clear | 0.252 x 1.13 x 0.037 | flat s flat | 5,000 |
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| CFI | IL | Flat Washer | Fiber | Plain | 0.21 x 0.414 x 0.032 | flat s flat white | 10,000 |
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