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1/4 USS Flat Washers (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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| Buy USS Flat Washers from one of our FCH Network Members | ||||||||
|---|---|---|---|---|---|---|---|---|
| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| Ababa | CA | USS Flat Washer | Steel | Plain | 1/4 | 1/4 extra thick high alloy uss flat washer al-2000 black b18.22.1 | 1364 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 1/4 | 1/4 uss f/w hrd stl yel znc (3/4 od) b18.22.1 | 5920 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 1/4 x 25 | 1/4 uss f/w 25/pkg hrd stl yel znc (3/4 od) b18.22.1 | 9 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 1/4 | 1/4 uss f/w extra thick hrd stl yel znc (3/4 od) b18.22.1 | 4250 |
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| GLF | OH | USS Flat Washer | Steel | Plain | 1/4 | 1/4 uss flat stl pln b18.22.1 () () () | 8537 |
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| GLF | OH | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4 | 1/4 uss flat 18-8 s/s b18.22.1 () () () | 342 |
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| GLF | OH | USS Flat Washer | Steel | Zinc/Black | 1/4 | 1/4 uss flat stl zinc black b18.22.1 () () () | 35675 |
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| GLF | OH | USS Flat Washer | Steel | Zinc/Clear | 1/4 | 1/4 uss flat stl zc crz3 b18.22.1 () () () | 26423 |
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| GLF | OH | USS Flat Washer | Grade 8 | Zinc/Yellow | 1/4 | 1/4 uss flat gr 8 stl zy b18.22.1 () () () | 17852 |
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| GLF | OH | USS Flat Washer | Steel | Galvanized | 1/4 | 1/4 uss flat stl hdg b18.22.1 () () () | 9176 |
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| GLF | OH | USS Flat Washer | Steel | Fluoropolymer-Based (Xylan, Fluorokote, Teflon) | 1/4 | 1/4 uss flat stl teflon b18.22.1 () () () | 140 |
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| GLF | OH | USS Flat Washer | Steel | Zinc/Yellow | 1/4 | 1/4 uss flat thru-hard stl zy domestic b18.22.1 () () () | 128 |
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| GLF | OH | USS Flat Washer | 316, 317, A4 Stainless | Plain | 1/4 | 1/4 uss flat 316 s/s b18.22.1 () () () | 1554 |
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| GLF | OH | USS Flat Washer | 316, 317, A4 Stainless | Plain | 1/4 | 1/4 uss flat 316 s/s domestic b18.22.1 () () () | 92 |
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| GLF | OH | USS Flat Washer | Grade 5 | Zinc/Clear | 1/4 | 1/4 uss flat grade 5 stl zc b18.22.1 () () () | 1971 |
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| BHAM | AL | USS Flat Washer | Nylon (Polyamide) | Plain | 1/4 x 1/2 | 1/4x1/2 uss flat .032tk nylon b18.22.1 | 80 |
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| Irwin Ind | Ont | USS Flat Washer | Steel | Zinc/Clear | 1/4 | 1/4 uss flatwashers steel zinc trivalent clear b18.22.1 | 27359 |
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| ASMC | IL | USS Flat Washer | Steel | Plain | 1/4 | flat USS pattern low carb b18.22.1 | 5,408 |
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| ASMC | IL | USS Flat Washer | Grade 9 | Zinc/Clear | 1/4 | gr9 tension flat USS pattern pfc9-usa zp b18.22.1 | 4,540 |
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| ASMC | IL | USS Flat Washer | Grade 8 | Plain | 1/4 | 1/4 gr8 flat uss pattern-usa med carb pln b18.22.1 | 4,500 |
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| ASMC | IL | USS Flat Washer | Grade 8 | Zinc/Clear | 1/4 | gr8 flat USS pattern-usa med carb zp b18.22.1 | 555 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 1/4 | 1/4 uss f/w hrd stl yel znc (3/4 od) b18.22.1 | 2200 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 1/4 x 25 | 1/4 uss f/w 25/pkg hrd stl yel znc (3/4 od) b18.22.1 | 6 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 1/4 | 1/4 uss f/w extra thick hrd stl yel znc (3/4 od) b18.22.1 | 400 |
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| 3Q, Inc. | IL | USS Flat Washer | Steel | Zinc/Yellow | 1/4 | 1/4 uss flat washer thru-hardened 1050 steel .0002 zinc yellow b18.22.1 | 224000 |
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| JET FITTING | CA | USS Flat Washer | Steel | Black Oxide | 1/4 | 1/4 uss f/w steel blk ox 14WUSSB b18.22.1 | 24723 |
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| JET FITTING | CA | USS Flat Washer | Steel | Zinc/Clear | 1/4 | 1/4 uss f/w stl zinc 344002 b18.22.1 | 55639 |
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| Standard | MA | USS Flat Washer | Steel | Zinc/Clear | 1/4 | 1/4 uss flat washer zinc plated steel b18.22.1 | 70 |
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| QFC | TX | USS Flat Washer | Steel | Plain | 1/4 | 1/4 pln uss hard b18.22.1 | 7300 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Yellow | 1/4 | 1/4 uss flat zinc yellow b18.22.1 | 111680 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Yellow | 1/4 | 1/4 uss flat zinc yellow b18.22.1 | 40098 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 1/4 | 1/4 uss flat triv zinc b18.22.1 | 23800 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 1/4 | 1/4 uss flat triv zinc b18.22.1 | 22389 |
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| QFC | TX | USS Flat Washer | Steel | Galvanized | 1/4 | 1/4 uss flat galvanized b18.22.1 | 5059 |
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| QFC | TX | USS Flat Washer | Steel | Galvanized | 1/4 | 1/4 uss f/w hdg b18.22.1 | 1 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 1/4 x 149 .312 x .734 | 1/4 uss flat zinc per ea 149 .312x.734x.065 b18.22.1 | 13412 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 1/4 x 149 .312 x .734 | 1/4 uss flat zinc per ea 149 .312x.734x.065 b18.22.1 | 7962 |
|
| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 1/4 x 149 .312 x .734 | 1/4 uss flat zinc per ea 149 .312x.734x.065 b18.22.1 | 7942 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 1/4 x 149 .312 x .734 | 1/4 uss flat zinc per ea 149 .312x.734x.065 b18.22.1 | 38 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 1/4 x 149 .312 x .734 | 1/4 uss flat zinc per ea 149 .312x.734x.065 b18.22.1 | 2100 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Yellow | 1/4 | 1/4 uss hard yellow zinc b18.22.1 | 523 |
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| B & K FAST | PA | USS Flat Washer | Steel | Galvanized | 1/4 | 1/4 uss flat washers hd galv b18.22.1 | 734.29 |
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| B & K FAST | PA | USS Flat Washer | Grade 8 | Zinc/Yellow | 1/4 | 1/4 uss thru-hard flat washers gr 8 z yellow b18.22.1 | 184.4208591 |
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| B & K FAST | PA | USS Flat Washer | Steel | Plain | 1/4 | 1/4 uss flat washers plain b18.22.1 | 86.031 |
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| B & K FAST | PA | USS Flat Washer | Steel | Zinc/Clear | 1/4 | 1/4 uss flat washers zinc b18.22.1 | 6311.328422877 |
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| General F | MI | USS Flat Washer | Steel | Zinc/Clear | 1/4 | 1/4 uss fw zn b18.22.1 | 111,787 |
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| BHAM | TX | USS Flat Washer | Brass | Plain | 1/4 | 1/4 uss flat brass b18.22.1 | 440 |
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| OSSCO | RI | USS Flat Washer | Grade 2 | Zinc/Black | 1/4 | 1/4 flat uss grade 2 black zinc b18.22.1 | 200 |
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| QFC | TX | USS Flat Washer | Steel | Plain | 1/4 | 1/4 uss flat washer plain each 149 .312x.734x.065 b18.22.1 | 11837 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Yellow | 1/4 | 1/4 uss flat washer zinc/yellow b18.22.1 | 7167 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Black | 1/4 | 1/4 uss flat washer steel black zinc b18.22.1 | 500 |
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| QFC | TX | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4 | 1/4 uss flat washer 18-8 stainless steel b18.22.1 | 400 |
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| Bostwick | IN | USS Flat Washer | Aluminum | Plain | 1/4 | 1/4 uss flat washer alum b18.22.1 | 820 |
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| JET FITTING | CA | USS Flat Washer | Steel | Black Oxide | 1/4 x .750 x .062 | 1/4x.750x.062 flat washer steel black oxide uss b18.22.1 | 13000 |
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| JET FITTING | CA | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4 x .750 x .062 | 1/4x.750x.062 flat washer stainless steel 18-8 uss b18.22.1 | 935 |
|
| JET FITTING | CA | USS Flat Washer | Steel | Zinc/Clear | 1/4 x .750 x .062 | 1/4x.750x.062 flat washer steel zinc plated uss b18.22.1 | 3704 |
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| Wurth | Ont | USS Flat Washer | Steel | Galvanized | 1/4 | wsh flt uss a w st (hdg) 1/4 b18.22.1 | 682 |
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| THRDFAST | FL | USS Flat Washer | Grade 8 | Zinc/Yellow | 1/4 | gr8 USS f/w z&y domestic b18.22.1 | 82 |
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| THRDFAST | TN | USS Flat Washer | Steel | Galvanized | 1/4 | USS f/w hdg b18.22.1 | 546 |
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| THRDFAST | AL | USS Flat Washer | Steel | Cadmium | 1/4 | USS f/w b18.22.1 | 56 |
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| KBS | TN | USS Flat Washer | Steel | Zinc/Clear | 1/4 | 1/4 uss flat/w pltd b18.22.1 | 50,308 |
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| KBS | TN | USS Flat Washer | Steel | Plain | 1/4 | 1/4 uss flat/w b18.22.1 | 42,816 |
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| THRDFAST | MS | USS Flat Washer | Steel | Zinc/Yellow | 1/4 | USS f/w z&y domestic b18.22.1 | 50 |
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| THRDFAST | AL | USS Flat Washer | Steel | Fluoropolymer-Based (Xylan, Fluorokote, Teflon) | 1/4 | USS f/w teflon blue b18.22.1 | 323 |
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| THRDFAST | OK | USS Flat Washer | Steel | Zinc/Clear | 1/4 | USS f/w domestic b18.22.1 | 5,981 |
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| THRDFAST | MS | USS Flat Washer | Steel | Fluoropolymer-Based (Xylan, Fluorokote, Teflon) | 1/4 | USS f/w teflon blue b18.22.1 | 184 |
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| WSB | KY | USS Flat Washer | Steel | Plain | 1/4 | q/washer flat uss a w all (mzyt) 1/4 b18.22.1 | 4,900 |
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| WSB | KY | USS Flat Washer | Steel | Nickel | 1/4 | washer flat uss a w st (ni) 1/4 b18.22.1 | 6,630 |
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| All Size | TX | USS Flat Washer | Steel | Galvanized | 1/4 | 1/4 uss flat washer galv b18.22.1 | 5,990 |
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| Davis | IL | USS Flat Washer | Steel | Black Oxide | 1/4 | 1/4 uss flat washer-steel black oxide b18.22.1 | 15,500 |
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