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Flat Washers
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.
40,596 Flat Washer, showing 200, (click on any line for more information)
| Buy Flat Washers from one of our FCH Network Members | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| Catalina | AZ | Flat Washer | 400 Stainless (405, 410,416,420,430 etc.) | Plain | M11.5 x 20 x 2.5 | 430 stainless steel washer od 20, id 11.5, height 2.5 mm plane spacer/washer drawing available () () | 322000 |
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| MESAFAST | CA | Flat Washer | Steel | Zinc/Clear | M16 | flat narrow thru-hardened | 25.0 |
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| MESAFAST | CA | Flat Washer | Steel | Plain | M36 | flat din 125a | 101.0 |
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| MESAFAST | CA | Flat Washer | Steel | Zinc/Clear | M30 | flat din 125a | 445.0 |
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| Liberty | IL | Flat Washer | 400 Stainless (405, 410,416,420,430 etc.) | Zinc/Clear | an960-c416 1/4 x 1/2 flat washer stainless steel rohs compliant an960-c416rh | 2,500 |
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| Liberty | IL | Flat Washer | Steel | Plain | 3/8 x 1.62 x .065 | .438 id (+.015/-.005) x 1.625 od (+.015/-.007) x .051/.104 thk flat cad qq-p-416 rev f MS27183-61 | 797 |
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| Liberty | IL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | Ms15795-841b | .18-8 304 s/s id x .438 od x .036/.065 thick flat dfars 300 series black oxide 304ss MS15795-841B | 4,329 |
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| Liberty | IL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | Ms15795-853b | ms15795-853b flat 300 series 18-8 304 black ox 304ss | 1,203 |
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| Liberty | IL | Flat Washer | 316, 317, A4 Stainless | Plain | .656 x 1.312 x .07 | .656 id x 1.312 od x .074/.121 thick flat 316 stainless MS15795-82031S | 29 |
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| Liberty | IL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/8 | ms15795-821 11/16 x 1 3/4 x .134 flat 18-8 304 304ss | 100 |
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| Liberty | IL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 | ms15795-812 5/16 flat 18-8 304 304ss | 250 |
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| Liberty | IL | Flat Washer | Silicon Bronze | Plain | 1/2 | 1/2 x 1-1/4 od flat MS16212-4 | 17 |
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| Liberty | IL | Flat Washer | Steel | Plain | .505/.525 id x. 875 (+.0200/-.0050) od x .059/.067 thick flat black oxide NAS1149F0863B | 64 |
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| Liberty | IL | Flat Washer | Steel | Cadmium/Yellow | 0.890 x 1.500 x .016 | .89 id (+/-.0100) x 1.50 od (+.02/-.005) x .016 thk (+/-.002) 1020 cad ams-qq-p-416 ty2 cl2 ty2 cl2 ty2 cl2 NAS1149F1416P | 40 |
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| Liberty | IL | Flat Washer | Steel | Plain | 0.390 x .625 x .032 | .390 id (+/-.0100) x .625 od (+.0200/-.0050) x .0320 thk (+/-.0060) brass NAS1149B0632H | 22 |
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| Liberty | IL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Black Oxide | 0.174 x .375 x .016 | nas1149-cn816b flat NAS1149CN816B | 122 |
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| Liberty | IL | Flat Washer | 316, 317, A4 Stainless | Plain | .344 x .625 | .344 (+/-.031) idx.625 (+/-.031) odx.060 (+/-.005) thick flat 316 stainless | 1,550 |
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| Liberty | IL | Flat Washer | Steel | Cadmium | .38 | 3/.400 idx.740/.760 odx.056/.068 thick flat 1010 | 2,039 |
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| Liberty | IL | Flat Washer | Steel | Zinc/Yellow | .27 | 1/.291 idx.990/1.01 odx.082/.096 thk flat ht 1050 4130 or 4140 rc 33-38 .0005 znc & .0005 znc & | 700 |
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| Liberty | IL | Flat Washer | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | .188 x .438 x .049 | .188 idx.438 odx.049 thick flat inconel 625 astm b446 asme b18.21.1 asme b18.21.1 | 9 |
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| Liberty | IL | Flat Washer | Steel | Plain | .515 x 2.0 x .156 1008/1010 | .515 idx2.0 odx.156 thick flat 1008/1010 ff-w-92b a class a ff-w-92b a class a | 441 |
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| Liberty | IL | Flat Washer | 316, 317, A4 Stainless | Plain | .203 id (+/-.005)x.562 od (+/-.005)x.078 thick flat 316 stainless | 550 |
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| Liberty | IL | Flat Washer | Ni-Cu Alloy (Monel, K-Monel, etc.) | Plain | .687 x 1 | .687 idx1.625 odx.10 thick flat nicual qq-n-286 | 33 |
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| Liberty | IL | Flat Washer | Steel | Zinc/Yellow | .89 x 2.31 x .042 | .89 idx2.31 odx.042 thick flat per print | 76 |
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| SIS | AZ | Flat Washer | Steel | Zinc/Clear | 1/4-20 x 3/4 | stud w/floating | 843 |
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| SIS | AZ | Flat Washer | Steel | Zinc/Clear | #6 .156.161 x .37 | #6 flat washer .156.161idx.37od steel zinc clear rohs | 1082 |
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| SIS | AZ | Flat Washer | Grade 8 | Zinc/Yellow | 1/2 | 1/2 x-thk f/w g8 | 100 |
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| SIS | AZ | Flat Washer | Steel | Plain | #10 .204 x .562 x .06 | #10flat washer .204x.562x.06 | 960 |
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| SIS | AZ | Flat Washer | Nylon (Polyamide) | Plain | .25 x .50 x .062 | flat white | 900 |
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| SIS | AZ | Flat Washer | Nylon (Polyamide) | Plain | 1/4 (1/2 odx.062 thk) type-b narrow flat | 1000 |
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| SIS | AZ | Flat Washer | Nylon (Polyamide) | Plain | .27 x .687 x .04 | .27 idx.687 odx.04 thick flat | 1108 |
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| SIS | AZ | Flat Washer | 316, 317, A4 Stainless | Plain | 1/4 x 5/8 x 0.050 | 1/4 idx5/8 odx0.050 thk flat 316 stainless | 3800 |
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| SIS | AZ | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 | an flat 18.8 st st | 300 |
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| SIS | AZ | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 | an960-c516l flat stst (.328 idx.562 odx.032 thick) | 450 |
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| SIS | AZ | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 | ms flat 18.8 st st | 100 |
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| SIS | AZ | Flat Washer | Brass | Plain | 1/4 x .688 | 1/4 flat od .688 thk .047 | 576 |
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| SIS | AZ | Flat Washer | Steel | Plain | 1/4 | type-a narrow flat | 10848 |
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| SIS | AZ | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 | flat standard ss | 950 |
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| SIS | AZ | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8 | ms flat 18.8 st st | 200 |
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| SIS | AZ | Flat Washer | Steel | Zinc/Clear | 3/8 | flat | 1700 |
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| SIS | AZ | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8 | an flat 18.8 st st | 600 |
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| SIS | AZ | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .328 x .562 x .062 | .328 idx.562 odx.062 thk flat 18-8 304 | 1800 |
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| SIS | AZ | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Zinc/Clear | 3/8 | type-a wide flat 18-8 stainless black | 1800 |
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| SIS | AZ | Flat Washer | Steel | Zinc/Clear | 7/16 | flat | 1350 |
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| Marine Fasteners | FL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1 3/4 flat 3-1/2 od .140 thick 18-8ss b18.22.1 | 3431 |
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| Marine Fasteners | FL | Flat Washer | 316, 317, A4 Stainless | Plain | 1 3/8 | 1 3/8 flat 316ss 316ss b18.22.1 | 2390 |
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| Marine Fasteners | FL | Flat Washer | 316, 317, A4 Stainless | Plain | M14 | a4 m14 flat din 125a 316ss | 22394 |
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| SRF | AL | Flat Washer | Steel | Plain | M10 | flat | 250 |
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| SRF | AL | Flat Washer | Brass | Plain | M10 | flat | - |
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| SRF | AL | Flat Washer | Steel | Zinc/Clear | M1 | flat | - |
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| SRF | AL | Flat Washer | Steel | Plain | M12 | flat | 9 |
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| SRF | AL | Flat Washer | Steel | Plain | M16 | flat | - |
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| SRF | AL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M20 | flat s/s | - |
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| SRF | AL | Flat Washer | Steel | Plain | M20 | flat | - |
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| SRF | AL | Flat Washer | Steel | Plain | M22 | flat | - |
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| SRF | AL | Flat Washer | 316, 317, A4 Stainless | Plain | M24 | flat a4 s/s | - |
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| SRF | AL | Flat Washer | Steel | Plain | M24 | flat | - |
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| SRF | AL | Flat Washer | Steel | Plain | M14 | flat | - |
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| SRF | AL | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M30 | flat s/s | - |
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| SRF | AL | Flat Washer | Steel | Zinc/Clear | phil pan m/s head | 5 |
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| SRF | AL | Flat Washer | Steel | Plain | M3 | flat | - |
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| SRF | AL | Flat Washer | Steel | Zinc/Clear | M36 | flat | - |
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| SRF | AL | Flat Washer | Steel | Plain | M36 | flat | - |
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| SRF | AL | Flat Washer | Steel | Zinc/Clear | M5 | cup | 100 |
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| SRF | AL | Flat Washer | Steel | Zinc/Clear | M4 | cup | 200 |
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| SRF | AL | Flat Washer | Steel | Plain | M42 | flat | - |
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| SRF | AL | Flat Washer | Steel | Zinc/Clear | M6 | cup | 870 |
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| SIS | AZ | Flat Washer | Brass | Nickel | .260+/-.005 idx.645+/-.005 odx.06 thk flat 270/260 | 1000 |
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| SIS | AZ | Flat Washer | Aluminum | Plain | 9/16 x 5/16 x 1/16 | 9/16 od 5/16 id 1/16 thick flat alum. | 12000 |
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| SIS | AZ | Flat Washer | Brass | Plain | 0.315 x 0.558 x 0.040 | 0.315 idx0.558 odx0.040 thk flat | 20000 |
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| SIS | AZ | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 0.280 x 0.500 x 0.031 | 0.280 idx0.500 odx0.031 thick 18-8 304 flat | 2339 |
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| SIS | AZ | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .375 x .875 x 0.062 | .375 idx.875 odx0.062 thick flat 18-8 s/s | 1800 |
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| SIS | AZ | Flat Washer | Rubber, Buna-N, Neoprene etc. | Plain | .355 x .625 x .093 | thk epdm flat | 2195 |
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| SIS | AZ | Flat Washer | Titanium | Plain | .406 x 1.0 x .062 | .406idx1.0 odx.062thk (3/8) flat | 250 |
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| SIS | AZ | Flat Washer | Steel | Zinc/Clear | 3/8 | (.406 idx.813 odx.080-.051 thk) flat | 2995 |
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| SIS | AZ | Flat Washer | Steel | Galvanized | 3/8 | type-b wide flat low carbon hot dip anzied | 74630 |
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| SIS | AZ | Flat Washer | Steel | Zinc/Clear | 3/8 | type-a wide flat clear | 6880 |
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| SIS | AZ | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-1.25 x 0.062 | 1/2 (1.25 odx0.062 thk) flat 18-8 s/s | 1180 |
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| SIS | AZ | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .516 x .875 x .062 | .516 idx.875 odx.062 thk flat 18-8 304 | 1000 |
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| SIS | AZ | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .486 x .627 x .020 | flat .627 odx.486 idx.020 thickness s/s | 1000 |
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| SIS | AZ | Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 0.687 x 1.50 | (5/8 bolt) 0.687 idx1.50 od flat 18-8 304 | 395 |
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| SIS | AZ | Flat Washer | Nylon (Polyamide) | Plain | #4 .115 x .250 x .032 | #4 flat .115x.250x.032 black | 17100 |
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| GUIDON | NJ | Flat Washer | Fiber | Plain | #10 | Keystone Electronics 3239 | 500 |
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| CHAMPION | TX | Flat Washer | Duplex Stainless (2205, Ferralium etc.) | Passivated | 1/2 | 1/2 flat washer 2205 duplex | 342 |
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