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 / Furnace Black | M6.62 x 12 x 1.80 | 17m06din34815 6.62x12x 1.80mm nylon flat washer natural | 7000 |
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| Endries | WI | Flat Washer | Steel | Zinc/Clear | .260/.270 x .493/.530 x .084/.090 | .260/.270x.493/.530x .084/.090 flat washer tri clr zinc 120 wh/144 red rust | 3900 |
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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 | Nylon (Polyamide) | Plain / Furnace Black | .531 x .74 x .187 | 17w07505 .531x.74x.187 nylon flat washer | 119 |
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| OneMonroe | MA | Flat Washer | Teflon (PTFE) | Plain / Furnace Black | 1/2 | washer flat 1/2 ptfe | 250 |
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| OneMonroe | MA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | .281 x .750 x .050 | flat washer .281 id x .750 od x .050 thk ss | 2175 |
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| OneMonroe | MA | Flat Washer | Steel | Plain / Furnace Black | M5 | m5 15mm o.d. 1.2 mm thick flat washer | 1700 |
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| OneMonroe | MA | Flat Washer | Nylon (Polyamide) | Plain / Furnace Black | #8 | #8 flat washer 3/8 od nylon | 1320 |
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| OneMonroe | MA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | #14 x 5/8 | #14 x 5/8 od stnl stl back neoprene washer | 1272 |
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| OneMonroe | MA | Flat Washer | Steel | Zinc/Clear | M12 | m12 flat washer a steel zinc | 437 |
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| OneMonroe | MA | Flat Washer | Rubber, Buna-N, Neoprene etc. | Plain / Furnace Black | #14 x 3/4 | #14 x 3/4 od steel back neoprene washer | 180 |
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| OneMonroe | MA | Flat Washer | Steel | Zinc/Clear | M10 | m10 flat washer 25mm x 4mm steel zinc | 49 |
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| OneMonroe | NC | Flat Washer | Steel | Zinc/Clear | M2 | 2m metric flatwasher plated | 96 |
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| OneMonroe | NC | Flat Washer | Plain / Furnace Black | 616 | an960xc616 | 53 |
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| American | NY | Flat Washer | Aluminum | Plain / Furnace Black | 3/8 x 5/8 x .036 | 3/8 x 5/8 x .036 aluminum flat washer | 9350 |
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| American | NY | Flat Washer | Brass | Nickel Plated | .226 x .50 x .041 | .226 id x .50 x .041 brass flat washer nickel plate | 5700 |
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| American | NY | Flat Washer | Brass | Plain / Furnace Black | #8-.165 x .310 x .032 | #8-.165 x .310 x .032 flat washer brass np | 1750 |
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| American | NY | Flat Washer | Brass | Plain / Furnace Black | 4 .125-.120 x .245 .255 | #4-.125-.120 x .245-.255 x .028-.036 fl washer brass | 5600 |
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| American | NY | Flat Washer | Brass | Plain / Furnace Black | 1/4 x 9/16 x .040 | 1/4 x 9/16 x .040 flat washer brass | 8.32 |
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| American | NY | Flat Washer | Brass | Plain / Furnace Black | 10 x 9/16 x .040 | 10 x 9/16 x .040 flat washer brass | 43000 |
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| American | NY | Flat Washer | Brass | Nickel Plated | 4 .125-.120 x .245 .255 | #4-.125-.120 x .245-.255 x.0280-.036 f/w brassnickle plated | 6300 |
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| American | NY | Flat Washer | Brass | Plain / Furnace Black | 3 .104-.109 x .213 .223 | #3-.104-.109 x .213-.223 x .022-.028 flat washer brass np | 2000 |
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| American | NY | Flat Washer | Brass | Nickel Plated | 10 x 9/16 x .040 | 10 x 9/16 x .040 flat washer brass nickle pl | 1547 |
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| American | NY | Flat Washer | Brass | Nickel Plated | #6 x 5/16 x .035 | #6 x 5/16 x.035 flat brass washer nickel pl | 3300 |
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| American | NY | Flat Washer | Brass | Plain / Furnace Black | #8 | #8 terminal washer brass | 10987 |
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| American | NY | Flat Washer | Steel | Zinc/Clear | 5 | 5m flat washer zinc pl | 500 |
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| American | NY | Flat Washer | Fiber | Plain / Furnace Black | #6 x 1/4 x .030 | #6 x 1/4 x .030 fiber washer | 6500 |
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| American | NY | Flat Washer | Nylon (Polyamide) | Plain / Furnace Black | .140 x 5/16 x .047 | .140 x 5/16 x .047 flat washer nylon | 2000 |
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| American | NY | Flat Washer | Fiber | Plain / Furnace Black | 8 x 5/8 x 1/16 | 8 x 5/8 x 1/16 fibre washer brown | 400 |
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| American | NY | Flat Washer | Nylon (Polyamide) | Plain / Furnace Black | 1/4 x 1/2 x 1/32 | 1/4 x 1/2 x 1/32 flat washer nylon | 3800 |
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| American | NY | Flat Washer | Nylon (Polyamide) | Plain / Furnace Black | .115 x 3/16 x 1/8 | .115 x 3/16 x 1/8 nylon rd washer | 4700 |
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| American | NY | Flat Washer | Nylon (Polyamide) | Plain / Furnace Black | .195 x .375 x .032 | .195 x .375 x .032 flat washer nylon | 4000 |
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| American | NY | Flat Washer | Nylon (Polyamide) | Plain / Furnace Black | 1/4 x 1 x .062 | 1/4 x 1 x .062 nylon flat washer | 150 |
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| American | NY | Flat Washer | Plastic | Plain / Furnace Black | .180 x .312 x .062 | .180 x .312 x .062 flat teflon washer | 4600 |
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| Cal Fastenrs | CA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Passivated | 5/16 | .344 x .688 x .065 18-8 304 f/w ms15795-812 ms15795-812 304ss ms15795-812 | 2,185 |
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| Liberty | IL | Flat Washer | Steel | Plain / Furnace Black | 3/8 x .38 | 3/8 (.38/.37) idx5/8 (.63/.62) odx1/32 (.034/.028) thick flat steel | 4,000 |
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| Liberty | IL | Flat Washer | Nylon (Polyamide) | Plain / Furnace Black | .284 x .625 x .062 | .284 idx.625 odx.062 thick flat nylon black | 2,800 |
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| Liberty | IL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | .265 x .500 x .030 | .265 idx.500 odx.030 thick flat 18-8 s/s steel | 1,985 |
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| Liberty | IL | Flat Washer | Steel | Zinc/Clear | .255 (+/-.005) idx.49 (+/-.005) odx.03 (+/-.010) thick flat zinc rohs per print | 4,600 |
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| Liberty | IL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | .262 x .500 x .072 | .262 idx.500 odx.072/.073 thick flat 18-8 304 steel | 2 |
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| Liberty | IL | Flat Washer | Steel | Zinc/Clear | 1/2 x .531 x .005 | 1/2 (.531 +/-.005) idx1.25 (+/-.005) odx1/4 (+/-.015) thick flat zinc rohs | 46,760 |
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| Liberty | IL | Flat Washer | Steel | Zinc/Clear | 3/8 x .437 x .005 | 3/8 (.437 +/-.005)x1 (1.0 +/-.005) odx.125 (.125 +/-.008) thick flat steel zinc rohs | 845,625 |
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| Liberty | IL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | .276 | .276/.286 idx.495/.505 odx.064/.083 thick flat 300 18-8 304 steel | 6,492 |
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| Liberty | IL | Flat Washer | Rubber, Buna-N, Neoprene etc. | Plain / Furnace Black | 5/8 x 1 1/4 | 5/8x1-1/4 steel backed neoprene zinc | 250 |
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| Liberty | IL | Flat Washer | 316, 317, A4 Stainless | Plain / Furnace Black | 3/8 x .406 | 3/8 (.406 id)x1-1/2 odx.062 thick flat 316 stainless steel | 10 |
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| Liberty | IL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | #10 x 3/8 | #10x3/8 epdm-polymer backed 18-8 s/s 13029044-3 | 2,000 |
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| Liberty | IL | Flat Washer | Rubber, Buna-N, Neoprene etc. | Plain / Furnace Black | 3/8 x 1 | 3/8x1 steel backed neoprene galvanized | 300 |
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| Liberty | IL | Flat Washer | Steel | Nickel Plated | .265 x 9/16 x .040 | .265 idx9/16x.040/.045 thick flat double chamfer copper nickel plate per print | 50 |
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| Liberty | IL | Flat Washer | Steel | Zinc/Clear | M5 x 5.3 | M5 (5.3 id)x10 odx1 thick standard flat zinc din 125a | 70 |
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| Liberty | IL | Flat Washer | 316, 317, A4 Stainless | Plain / Furnace Black | 3/4 x 1 7/8 | 3/4x1-7/8 standard flat 316 stainless steel | 50 |
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| Liberty | IL | Flat Washer | Steel | Zinc/Yellow | M6 | M6 flat steel zinc & yellow din 125b | 75 |
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| Liberty | IL | Flat Washer | Silicon Bronze | Plain / Furnace Black | 3/8 x 7/8 | 3/8x7/8 flat silicon brz | 500 |
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| Liberty | IL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | 3/8 x .406 x 7/8 | 3/8 standard flat (.406 idx7/8 o/dx.05 thick) 18-8 s/s steel w/certs | 2,396 |
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| Liberty | IL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | M16 x 17 | M16 standard flat a2 18-8 304 steel 17 idx30 odx3 thick | 2 |
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| Liberty | IL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | #12 x .258 | #12 (.258 id)x1/2 odx.045 thick flat 18-8 s/s steel | 5,000 |
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| GUIDON | TX | Flat Washer | Nylon (Polyamide) | Plain / Furnace Black | .253 x .506 x .050 | Seastrom Manufacturing 5606-16-50 | 1,900 |
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| GUIDON | NJ | Flat Washer | Plastic | Plain / Furnace Black | 3/8 x 1 x .062 | Seastrom Manufacturing 5612-300-62 | 170 |
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| GUIDON | NJ | Flat Washer | Plastic | Plain / Furnace Black | 1/2 x 1 1/4 x .100 | Seastrom Manufacturing 5612-311-100 | 168 |
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| Cal Fastenrs | CA | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Passivated | #8 | ms15795-807 .18-8 304 s/s x .375 x .049 s.s f/w f/w 304ss f/w | 20,000 |
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| SunPack | FL | Flat Washer | 316, 317, A4 Stainless | Plain / Furnace Black | 1 1/8 | 1-1/8 316 ss flat washer domestic | 16 |
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| Liberty | IL | Flat Washer | Steel | Zinc/Clear | 1/2 x .531 x .005 | 1/2 (.531 +/-.005) idx1.375 (+/-.005) odx1/8 (+/-.008) thick flat zinc rohs | 16,500 |
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| SunPack | FL | Flat Washer | 316, 317, A4 Stainless | Passivated | 1 3/8 | 1-3/8 316 ss flat a967 | 4 |
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| SunPack | FL | Flat Washer | 316, 317, A4 Stainless | Fluoropolymer-Based (Xylan, Fluorokote, Teflon) | 7/8 | 7/8 316 ss flat washer ptfe blue | 2 |
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| SunPack | FL | Flat Washer | 316, 317, A4 Stainless | Fluoropolymer-Based (Xylan, Fluorokote, Teflon) | 1 1/8 | 1-1/8 316 ss flat washer ptfe blue | 2 |
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| SunPack | FL | Flat Washer | Aluminum | Plain / Furnace Black | 3/4 | flat | 13 |
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| SunPack | FL | Flat Washer | 316, 317, A4 Stainless | Plain / Furnace Black | 1 3/8 | 316 ss flat | 2 |
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| All-Ways | IL | Flat Washer | Steel | Plain / Furnace Black | raf 1057ss | 1,500 |
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| All-Ways | IL | Flat Washer | Steel | Plain / Furnace Black | shakeproof 3502-05-32 | 13,150 |
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| All-Ways | IL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | seastrom 5749-6-3-2 | 4,000 |
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| BAYFASTCO | FL | Flat Washer | Steel | Zinc/Clear | #4 | #4 type-b narrow flat washer stl zinc | 17329 |
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| OBRIEN | OH | Flat Washer | Steel | Zinc/Clear | 3/16 backup 1/2 od | 3380 |
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| OBRIEN | OH | Flat Washer | Steel | Zinc/Clear | #4 | type-b narrow f/w 1/4 od .036 thk | 9500 |
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| OBRIEN | OH | Flat Washer | Steel | Plain / Furnace Black | 1/2 x 3/4 x 1/16 | 1/2idx3/4odx1/16 nyln wash | 7896 |
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| OBRIEN | OH | Flat Washer | Nylon (Polyamide) | Plain / Furnace Black | 1/4 x 11/16 x .040 | 1/4idx11/16od x.040 thick flat | 6500 |
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| OBRIEN | OH | Flat Washer | Steel | Zinc/Clear | 3/16 back-up rivet 3/8od | 4950 |
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| OBRIEN | OH | Flat Washer | Nylon (Polyamide) | Plain / Furnace Black | #8 .031 | #8 f/w .031 thk | 2849 |
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| OBRIEN | OH | Flat Washer | Steel | Plain / Furnace Black | .49 x .74 x .03 | .49 id .74 od .03 thk f/w cadmium | 4800 |
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| OBRIEN | OH | Flat Washer | Brass | Plain / Furnace Black | #2 | f/w | 4600 |
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| OBRIEN | OH | Flat Washer | Steel | Zinc/Clear | .312 x .500 x .093 | .312id .500od .093thk f/w rohs compliant | 4500 |
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| OBRIEN | OH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | 3/8 x 1/2 x .01 | 3/8 id 1/2 od .01 thk s/s | 4500 |
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| OBRIEN | OH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | 3/8 x 1/2 x .002 | 3/8 id 1/2 od .002 thk s/s | 4000 |
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| OBRIEN | OH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | 3/8 x 1/2 x .005 | 3/8 id 1/2 od .005 thk s/s | 3800 |
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| OBRIEN | OH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | 3/8 x 1/2 x .02 | 3/8 id 1/2 od .02 thk s/s | 3775 |
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| OBRIEN | OH | Flat Washer | Aluminum | Plain / Furnace Black | 3/16 backup 1/2 od | 3200 |
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| OBRIEN | OH | Flat Washer | Steel | Plain / Furnace Black | .480 x .750 x .0625 | .480 id .750 od .0625 thick viton 70 durometer | 3250 |
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| OBRIEN | OH | Flat Washer | Brass | Plain / Furnace Black | #5 3/8 x 1/32 | #5 f/w 3/8 od 1/32 thk | 2600 |
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| OBRIEN | OH | Flat Washer | Brass | Plain / Furnace Black | .12 x .281 x .018 .032 | .12 id .281 od .018-.032 thk f/w | 2500 |
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| OBRIEN | OH | Flat Washer | Nylon (Polyamide) | Plain / Furnace Black | 1/4 f/w 1 od 17w10041 | 2294 |
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| OBRIEN | OH | Flat Washer | Steel | Zinc/Clear | .312 x .687 x 5/64 | .312id .687od 5/64thk f/w | 2000 |
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| OBRIEN | OH | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Zinc/Clear | .188 x .375 x .049 | .18-8 304 s/sid .375od .049thk f/w | 2370 |
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| THRDFAST | FL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | M3 | a2 f/w | 4,116 |
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| THRDFAST | FL | Flat Washer | Brass | Plain / Furnace Black | 1/2 | flat small b18.22.1 | 197 |
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| THRDFAST | FL | Flat Washer | Brass | Plain / Furnace Black | 1/4 | flat small b18.22.1 | 135 |
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| THRDFAST | FL | Flat Washer | Brass | Plain / Furnace Black | 5/8 | flat b18.22.1 | 118 |
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| THRDFAST | FL | Flat Washer | 316, 317, A4 Stainless | Plain / Furnace Black | 3/8 | t-316 ss f/w b18.22.1 | 102 |
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| THRDFAST | FL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | #4 | 18-8 ss f/w b18.22.1 | 744 |
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| THRDFAST | FL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | M24 | a2 f/w | 31 |
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| THRDFAST | FL | Flat Washer | 316, 317, A4 Stainless | Plain / Furnace Black | M24 | t-316 ss f/w | 5 |
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| THRDFAST | FL | Flat Washer | Brass | Plain / Furnace Black | 1 1/4 | flat b18.22.1 | 3 |
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| THRDFAST | FL | Flat Washer | 316, 317, A4 Stainless | Plain / Furnace Black | 1 | 1 t-316 ss f/w b18.22.1 | 1 |
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| THRDFAST | TN | Flat Washer | Brass | Plain / Furnace Black | 1/2 x 15/16 x 1/32 | b18.22.1 | 1,737 |
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| THRDFAST | TN | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | .8 x 2 | 18-8 ss special dim f/w 1/4thk b18.22.1 | 508 |
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| THRDFAST | TN | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | .7 x 1 1/2 | 18-8 ss spec dim f/w b18.22.1 | 515 |
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| THRDFAST | TN | Flat Washer | Nylon (Polyamide) | Plain / Furnace Black | 3/8 | flat b18.22.1 | 250 |
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| THRDFAST | TN | Flat Washer | Steel | Zinc/Clear | M8 | small od flat | 100 |
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| THRDFAST | TN | Flat Washer | Steel | Passivated | 7/16 | military b18.22.1 | 70 |
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