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 | Nylon (Polyamide) | Plain | .531 x .74 x .187 | 17w07505 .531x.74x.187 nylon flat washer | 119 |
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| Endries | WI | Flat Washer | Galvanized | .556/.566 x 1.495/1.505 x .235/.265 | .556/.566x1.495/1.505x .235/.265 flat washer hot dip galvanized | 400 |
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| Endries | WI | Flat Washer | Aluminum | Plain | 1/8 x 3/8 | 1/8 x 3/8 round back-up washer alumn | 1374 |
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| Endries | WI | Flat Washer | Nylon (Polyamide) | Plain | .250 x .562 x .031 | wsr250x562x031n .250x .562x.031 nylon washer (e&t fasteners only) | 200 |
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| Cal Fastenrs | CA | Flat Washer | Steel | Plain | .510 x 2 | .510 idx2 odx.125 thick flat pl | 245 |
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| Cal Fastenrs | CA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .187 x .625 x .046 | .187 idx.625 odx.046 th 18-8 304 f/w | 400 |
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| Cal Fastenrs | CA | Flat Washer | Nylon (Polyamide) | Plain | .380 x .625 x .060 | .380 id x .625 od x .060 thick-blk nylon f/w | 195 |
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| Shadran I | Flat Washer | Plain | #10 | (50) # 10 f/w | inquire |
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| Shadran I | Flat Washer | Plain | 1/2 | (8) 1/2 s pattern flat washer | inquire |
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| Cal Fastenrs | CA | Flat Washer | Steel | Cadmium/Yellow | #2 | .094 x .250 x .020 steel flat washer zinc and gold ms27183-2 | 3,700 |
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| Cal Fastenrs | CA | Flat Washer | Nylon (Polyamide) | Plain | .152 x .375 x .10 | .152id x.375od x.10 thick nylon f/w nylon f/w | 5,000 |
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| Cal Fastenrs | CA | Flat Washer | Steel | Plain | .188 x .375 x .049 | .188 id x .375 od x .049 thick flat washer cadmium yellow ms27183-7 | 1,000 |
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| Cal Fastenrs | CA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .250 x 9/16 x .045 | .250 id x 9/16 od .045 (#12 commercial f/w)s.s. | 200 |
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| Cal Fastenrs | CA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .812 x 2.000 x .110 | ms-15795-823 (.812 x 2.00 x .148)s.s f/w ms f/w | 16 |
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| Cal Fastenrs | CA | Flat Washer | Steel | Plain | .089 x .149 x .016 | nas-620-2 (.089 x .149 x .016)f/w-cad plated nas f/w | 5,000 |
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| Shadran I | Flat Washer | Copper | Plain | #10 | # 10 copper belt burr | 7 |
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| Cal Fastenrs | CA | Flat Washer | Steel | Zinc/Clear | M11 x 25 x .056 | 11mm x 25mm x .056 f/w pltd. flat washer | 3,750 |
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| Cal Fastenrs | CA | Flat Washer | Steel | Fluoropolymer-Based (Xylan, Fluorokote, Teflon) | M3.2 x 5.84 x .5 | 3.2mm id x 5.84mm od x .5mm thk f/w teflon 5612-210-20 .126x.223x.02 | 22,897 |
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| Cal Fastenrs | CA | Flat Washer | Steel | Zinc/Clear | M4 x 36 x .6 | 4mm id x 36mm od x .6mm thk f/w-trivalent zinc rohs compliant | 5,000 |
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| Cal Fastenrs | CA | Flat Washer | Steel | Zinc/Clear | M13 x 24 x 12 | m12 m13 x 24mm x 2.5 200 brinell-pltd din 125a bn-343 bn-343 | 770 |
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| Cal Fastenrs | CA | Flat Washer | Steel | Zinc/Clear | M13 x 24 x 12 | m12 flatwasher m13 x 24mm x 2.5mm-zinc bn-715 bn-715 | 140 |
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| Cal Fastenrs | CA | Flat Washer | Steel | Plain | M16 | m16 steel flatwasher din 125a 30mm od-plain din#125a din 125a | 1,000 |
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| Cal Fastenrs | CA | Flat Washer | Steel | Zinc/Clear | 2.5 flatwasher m2.7 x 6mm x .5mm-zinc bn-715 bn-715 | 900 |
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| Cal Fastenrs | CA | Flat Washer | Steel | Plain | M23 x 39 x 22 | m22 flatwasher m23 x 39mm x 3mm bn #713 bn 713 | 550 |
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| Cal Fastenrs | CA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M6.4 x 12 x 6 | m6 flatwasher m6.4 x 12mm x 1.6mm-s.s. bn-670 bn-670 | 760 |
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| Cal Fastenrs | CA | Flat Washer | Steel | Plain | M8.4 x 16 x 8 | m8 flatwasher m8.4 x 16mm x 1.6mm-plain bn-713 bn-713 | 5,912 |
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| Cal Fastenrs | CA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M3.2 x 6 x 3 | m3 flatwasher m3.2 x 6mm x .5mm-stainless | 80 |
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| Cal Fastenrs | CA | Flat Washer | Steel | Zinc/Clear | M4 x 4.3 | m4 flatwasher 4.3mm x 8mm x .5mm zinc plated din# 433 din 433 | 800 |
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| Cal Fastenrs | CA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M4.3 x 12 x 4 | m4 flatwasher m4.3 x 12mm x 1mm-s.s. bn-1356 bn-1356 | 2,100 |
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| Cal Fastenrs | CA | Flat Washer | Steel | Black Oxide | M4.3 x 12 x 4 | m4 flatwasher m4.3 x 12mm x 1mm-steel blk oxide | 1,700 |
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| Cal Fastenrs | CA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Black Oxide | M5.3 x 10 x 5 | m5 flatwasher m5.3 x 10mm x 1mm-s.s.blk oxide din125a f/w stainlessblk ox din125a f/w stainlessblk ox | 2,540 |
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| SJS Prod | CA | Flat Washer | Fiber | Plain | M5.3 x 10 x 5 | std m5 fiber glass washer 5.3 x 10 x .8 | 300 |
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| SJS Prod | CA | Flat Washer | Steel | Zinc/Clear | M2 x 10 | m2x10m phillips pan stl zn w/splt f/w rohs | 22000 |
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| SJS Prod | CA | Flat Washer | Steel | Zinc/Clear | M2 x 12 | m2x12m phillips pan stl zn w/splt f/w rohs | 25000 |
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| SJS Prod | CA | Flat Washer | Steel | Zinc/Clear | M3 x 6 | m3x6mm phillips pan stl zn w/splt f/w rohs | 20000 |
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| SJS Prod | CA | Flat Washer | Steel | Zinc/Clear | M3 x 8 | m3x8mm phillips pan stl zn w/splt f/w rohs | 12900 |
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| SJS Prod | CA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M2 x 5.0 x .3 | m2 f/w 5.0 odx .3mm 18-8 ss thk | 900 |
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| SJS Prod | CA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M13 x 37 | m13 x 37mm x 3mm flat washer ss a2 rohs | 200 |
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| Hayes | CA | Flat Washer | Steel | Plain | #10 x 7/16 | nas549l10 10 x .437 x .031 phenolic flat | 55 |
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| SJS Prod | CA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M5 | m5 flat washer ss rohs | 692 |
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| SJS Prod | CA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M6 | m6 fw sm od 6.4x11x1.6 a2 ss rohs complt | 3872 |
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| NAPPCO | TX | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-.115 x .270 x .016 | #4 washer s/s +-.115 id .270 od .016 thk | 1926 |
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| NAPPCO | TX | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-.125 x .189 x .030 | #4 washer s/s +-.125 id .189 od .030 thk | 8927 |
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| NAPPCO | TX | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-.504 x .751 x .020 | 1/2 washer s/s+-.504 id .751 od .020 thk | 1300 |
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| NAPPCO | TX | Flat Washer | Aluminum | Plain | 1/4-.261 x .430 x 050 | 1/4 washer alum +-.261id .430 od.050 thk | 5210 |
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| NAPPCO | TX | Flat Washer | Nylon (Polyamide) | Plain | 5/16 | 5/16 retaining washnylon .734 od 292 id | 1000 |
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| NAPPCO | TX | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/8 | 5/8 f/w typea narrow s/s 18-8.656 id | 260 |
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| NAPPCO | TX | Flat Washer | Copper | Plain | .500 x 1.13 x .080 | 1/2 f/w copper.500 id 1.13 od .080 thk | 75 |
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| NAPPCO | TX | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #8-.188 x .312 x .010 | #8 washer s/s +-.188 id .312 od .010 thk | 350 |
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| NAPPCO | TX | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .2810 x .75 x .010 | flatwasher 18-8 .2810id x .75od x.010tk | 1200 |
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| NAPPCO | TX | Flat Washer | Steel | Plain | .343 x .500 x .060 | 5/16 flatwasher .343 id x .500 od x .060 | 1100 |
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| NAPPCO | TX | Flat Washer | Steel | Plain | 5/16 flat washer steel 7/8 od 3/8 id | 1400 |
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| NAPPCO | TX | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #801 .187 x .078 | flat washer #801 s/s 18-8 .187 od .078id | 500 |
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| NAPPCO | TX | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1-1/4 flat washer s/s 18-8 2-3/4 od | 19 |
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| Hayes | CA | Flat Washer | Steel | Black Oxide | .627 x .735 x .042 | .627 x .735 x .042 flat washer steel blk/ox | 5940 |
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| OneMonroe | NC | Flat Washer | ms9549-6 | 50 |
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| OneMonroe | NC | Flat Washer | Plain | .174 x .375 x .032 86 | nas1149en832r | 50 |
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| OneMonroe | NC | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .253/.256 x .558/.562 x .083/.103 | 1/4 f/w 18-8 ss .253/.256 x .558/.562 x .083/.103 | 373 |
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| OneMonroe | NC | Flat Washer | Steel | Plain | 1 7/16 | 1-7/16 insulation washer | 1100 |
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| OneMonroe | NC | Flat Washer | Rubber, Buna-N, Neoprene etc. | Plain | 1 1/4 | 1-1/4 rubber tip w/washer | 19 |
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| OneMonroe | NC | Flat Washer | Steel | Plain | .160 x .535 x .032 | seastrom sea 5602-75-32 #6fl fbr washer .160x.535x032 | 638 |
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| OneMonroe | NC | Flat Washer | Steel | Zinc/Clear | #2 | #2 f/w stl znc t-b narrow .094 x .188 x x.022/.028 | 3800 |
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| OneMonroe | NC | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .094 x .250 x .032 | #2 f/w 18-8 ss .094 x .250 x .032 ref an960-c2 | 5000 |
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| OneMonroe | NC | Flat Washer | Steel | Zinc/Clear | .115/.125 x .204/.224 x .029/.035 | #4 f/w stl znyl .115/.125 x .204/.224 x .029/.035 | 3065 |
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| OneMonroe | NC | Flat Washer | Nylon (Polyamide) | Plain | .125 x .250 x .115 | #4 f/w nyl nat .115 x .250 x .125 fw4-125 | 750 |
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| OneMonroe | NC | Flat Washer | Steel | Zinc/Clear | #8 | #8 f/w stl znc .191/.198 x .309/.320 x .025 | 237 |
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| OneMonroe | NC | Flat Washer | Steel | Plain | .195/.205 x .349/.369 x .059/.067 | #10 f/w stl cdyl .195/.205 x .349/.369 x .059/.067 | 840 |
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| MAINSOURC | NH | Flat Washer | Nylon (Polyamide) | Plain | M4 | flt wshr din 125a | 54 |
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| Global | CA | Flat Washer | Steel | Plain | nas1640-2 washer | 590 |
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| Century | FL | Flat Washer | Nylon (Polyamide) | Plain | .156 x .391 x .062 | nylon retaining washer #8 .156 x .391 x .062 volt# wr-0390-0152-0062 | 10000 |
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| Century | FL | Flat Washer | Nylon (Polyamide) | Plain | 940053-1 rev.e special nylon flat washer per dwg. | 296 |
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| Century | FL | Flat Washer | Steel | Plain | 1/4 x .812 x .109 | ms51412-23 washer flat .266 x 812 x .075-.119 | 294 |
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| Century | FL | Flat Washer | nas1831c5c08 | 99 |
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| Century | FL | Flat Washer | nas1206-27 | 42 |
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| Century | FL | Flat Washer | b1867ed060160 | 7 |
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| American | NY | Flat Washer | Brass | Nickel Plated | 10 x 7/16 x 3/32 | 10 x 7/16 x 3/32 brass f/w nickel pl | 14800 |
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| American | NY | Flat Washer | Steel | Zinc/Clear | .128 | #5(.128)x5/8x1/32 f/w zp | 4000 |
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| American | NY | Flat Washer | Brass | Plain | .265 x 9/16 x .040 | flat | 3715 |
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| American | NY | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10 x 7/16 x 032 | flat 18-8 304 | 1350 |
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| American | NY | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/8 x 1 1/2 | flat 18-8 304 | 561 |
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| American | NY | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8 x .87 x .063 | flat 18-8 s/s | 50 |
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| American | NY | Flat Washer | Brass | Plain | 14 11/16 x .260 x .051 | large pattern | 1005 |
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| American | NY | Flat Washer | 316, 317, A4 Stainless | Plain | 1 1/4 | flat 316 | 31 |
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| American | NY | Flat Washer | Steel | Galvanized | 5/8 x 3 x 3 | thick hot dip plate | 14 |
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| SunPack | FL | Flat Washer | Brass | Plain | 5/16 | 5/16 brass flat | 154 |
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| VIKING BO | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/8 | ms15795-820 | 473 |
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| VIKING BO | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1710 |
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| VIKING BO | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2 | 269 |
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| ACCURATE | IL | Flat Washer | Steel | Plain | 1/2 x 2 1/4 x 3/16 | flat plate | 96 |
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| ACCURATE | IL | Flat Washer | Steel | Plain | 3/8 x 2 x 3/16 | flat plate | 220 |
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| ACCURATE | IL | Flat Washer | Steel | Plain | 3/8 x 3/4 | flat (1/16 thick) (.375x.75x.0625) | 7800 |
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| ACCURATE | IL | Flat Washer | Steel | Painted | 1/2 x 1 1/2 | flat bronze | 800 |
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| ACCURATE | IL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 x 9/16 | flat s 18-8 304 ccc (.328x.562x.062) | 593 |
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| YANKEE | NH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M8-16 | m8 flat washer (16mm od) din125a a2 (18-8) stainless steel | 5279 |
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| YANKEE | NH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .256 x .560 x .060 | flat washer .256id x .560od x .060tk stainless steel | 4946 |
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| YANKEE | NH | Flat Washer | Steel | Fluoropolymer-Based (Xylan, Fluorokote, Teflon) | .260 x .580 x .025 | flat washer ptfe (teflon) .260id x .580od x .025 | 901 |
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| YANKEE | NH | Flat Washer | Steel | Fluoropolymer-Based (Xylan, Fluorokote, Teflon) | .315 x .620 x .014 | flat washer ptfe (teflon) .315id x .620od x .014 | 690 |
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| YANKEE | NH | Flat Washer | Steel | Fluoropolymer-Based (Xylan, Fluorokote, Teflon) | flat washer ptfe (teflon) .380id x .624od x .062tk special-to print | 595 |
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| YANKEE | NH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | nas spec .255id .468od .032tk fw-ss | 470 |
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| YANKEE | NH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M5 | m5 flat washer-5.3mm id x 9.5mmod x .9-.11mm tk-a2 stainless steel | 700 |
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| YANKEE | NH | Flat Washer | Steel | Black Oxide | M6 | m6 black ultra corrosion resistant coated steel washer-6.4mm id x 12mm od | 4 |
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| YANKEE | NH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .203 x .750 x .063 | flat washer special .203 id x.750 od xx .063 tk 18-8 stainless steel | 24 |
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| YANKEE | NH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | mil spec #4 flat washer-stain steel | 3500 |
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| YANKEE | NH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | mil spec #6 flat washer-stain steel | 565 |
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| YANKEE | NH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | mil spec 5/16 flat washer-stain steel | 505 |
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| YANKEE | NH | Flat Washer | Aluminum | Plain | 1/8 x 3/8 | 1/8 x 3/8 backup washer alum for 1/8 rivet | 1200 |
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| YANKEE | NH | Flat Washer | Aluminum | Plain | 3/16 x 1/2 | 3/16 x 1/2 backup washer alum for 3/16 rivet | 1484 |
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| YANKEE | NH | Flat Washer | Steel | Zinc/Clear | m8 fw-zinc 8.4id 16.0od 1.6tk tp200 special | 344 |
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| YANKEE | NH | Flat Washer | Steel | Zinc/Clear | M6 | m6 flat washer w/chamferw-zinc bn721 | 200 |
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| YANKEE | NH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .265 x .500 x .032 | military spec flat washer .265id .500od .032tk 300 series stainless steel | 1475 |
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| YANKEE | NH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4 .120 x .320 x .030 | military spec #4 flat washer .120id .320od .030tk 300 series stainless steel | 90 |
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| YANKEE | NH | Flat Washer | Steel | Zinc/Yellow | #6 | nas spec#6 flatwasher-zinc yellow | 950 |
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| YANKEE | NH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10 x .354 x .02 .04 | military spec #10 x .354od x .02-.04tk flat washer 300 series stainless steel | 5007 |
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| METRO IND | OH | Flat Washer | Steel | Plain | M30 | m30 flat washer din 125 steel | 31 |
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| METRO IND | OH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M5 | m5 thick flat washer din 7349 s/s | 1324 |
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| METRO IND | OH | Flat Washer | Steel | Plain | M10 x 34 | m10 x 34 flat washer 5mm thick steel | 42 |
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| METRO IND | OH | Flat Washer | 316, 317, A4 Stainless | Plain | 3/8 | flat 316 s/s | 3000 |
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| TownCountry | AR | Flat Washer | Steel | Zinc/Yellow | M08 | m08 flat washer std. yellow zinc | 30 |
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| TownCountry | AR | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10 | flat 18-8 304 18-8 | 350 |
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| METRO IND | OH | Flat Washer | Steel | Plain | M3.5 | M3.5 flat steelplain din 125 | 1000 |
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| YANKEE | NH | Flat Washer | Steel | Black Oxide | M5 | m5 black ultra corrosion resistant coated steel washer-5.3mm id x 10mm od | 84 |
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| YANKEE | NH | Flat Washer | Nylon (Polyamide) | Plain | #4 .115 x .250 x .060 | #4 flatwasher nylon.115id .250od .060tk | 1450 |
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| SII | IN | Flat Washer | 316, 317, A4 Stainless | Plain | 1/2 | 1/2 flat s stainless 316 b18.22.1 | 1100 |
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| FTS | OH | Flat Washer | Steel | Zinc/Clear | #10 .209 x .500 x .063 | #10 fw .209id x.500od x.063thk printernal stl zn | 22040 |
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| Lubker Di | PA | Flat Washer | Steel | Zinc/Clear | #8 | #8 (eight) (.130 idx.375 odx.060/.065 thk) rivet burr wash zp | 273190 |
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| Lubker Di | PA | Flat Washer | Brass | Plain | #2 x 3/16 | #2x3/16 flat brass | 5400 |
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| Lubker Di | PA | Flat Washer | Aluminum | Plain | 1/4 | 1/4 flat alum | 6922 |
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| Lubker Di | PA | Flat Washer | Nylon (Polyamide) | Plain | .255 x .555 x .047 .005 | .255 idx.555 odx.047 thk (+/-.005 all dimensions) natural nylon f/w (ref 17w05552) | 13090 |
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