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5/16 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.
75 results, (click on any line for more information)
| Buy USS Flat Washers from one of our FCH Network Members | ||||||||
|---|---|---|---|---|---|---|---|---|
| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| BHAM | AL | USS Flat Washer | Nylon (Polyamide) | Plain | 5/16 x 3/4 | 5/16x3/4 uss flat .062tk nylon b18.22.1 | 154 |
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| BHAM | AL | USS Flat Washer | Brass | Plain | 5/16 | 5/16 uss flat small brass b18.22.1 | 58 |
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| GLF | OH | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 x .875 | 5/16x.875 uss flat 18-8 s/s b18.22.1 () () () | 2769 |
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| GLF | OH | USS Flat Washer | Grade 8 | Zinc/Yellow | 5/16 | 5/16 uss flat gr 8 stl zy b18.22.1 () () () | 14165 |
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| GLF | OH | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 uss flat stl zc b18.22.1 () () () | 14299 |
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| GLF | OH | USS Flat Washer | Steel | Plain | 5/16 | 5/16 uss flat stl pln b18.22.1 () () () | 5100 |
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| GLF | OH | USS Flat Washer | 316, 317, A4 Stainless | Plain | 5/16 | 5/16 uss flat 316 s/s b18.22.1 () () () | 547 |
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| GLF | OH | USS Flat Washer | Grade 5 | Zinc/Clear | 5/16 | 5/16 uss flat grade 5 stl zc b18.22.1 () () () | 3176 |
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| GLF | OH | USS Flat Washer | Steel | Galvanized | 5/16 x 7/8 | 5/16x7/8 od uss flat -hdgalvanized b18.22.1 () () () | 3064 |
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| GLF | OH | USS Flat Washer | 316, 317, A4 Stainless | Plain | 5/16 | 5/16 uss flat 316 s/s domestic b18.22.1 () () () | 92 |
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| GLF | OH | USS Flat Washer | Steel | Fluoropolymer-Based (Xylan, Fluorokote, Teflon) | 5/16 | 5/16 uss flat stl teflon b18.22.1 () () () | 790 |
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| GLF | OH | USS Flat Washer | Steel | Zinc/Yellow | 5/16 | 5/16 uss flat thru-hard stl zy domestic b18.22.1 () () () | 32 |
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| Ababa | CA | USS Flat Washer | Steel | Black Oxide | 5/16 | 5/16 uss f/w extra thick hrd stl al-2000 black (7/8 od) b18.22.1 | 1213 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 5/16 | 5/16 uss f/w hrd stl yel znc (7/8 od) b18.22.1 | 1000 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 5/16 | 5/16 uss f/w hrd stl yel znc (7/8 od) b18.22.1 | 2 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 5/16 | 5/16 uss f/w extra thick hrd stl yel znc (7/8 od) b18.22.1 | 2875 |
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| Ababa | CA | USS Flat Washer | Steel | Plain | 5/16 | 5/16 uss f/w al-2000 (black) stl (7/8 od) b18.22.1 | 2328 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Black | 5/16 | 5/16 uss f/w w/super seal stl blk znc (7/8 od) b18.22.1 | 80 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Clear | 5/16-100 | 5/16 uss f/w (100/bag) stl znc (7/8 od) b18.22.1 | 2000 |
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| Irwin Ind | Ont | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 uss flatwashers steel zinc trivalent clear b18.22.1 | 1650 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 5/16 | 5/16 uss f/w hrd stl yel znc (7/8 od) b18.22.1 | 1200 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 5/16 | 5/16 uss f/w hrd stl yel znc (7/8 od) b18.22.1 | 4 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 5/16 | 5/16 uss f/w extra thick hrd stl yel znc (7/8 od) b18.22.1 | 600 |
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| Alma Bolt | MI | USS Flat Washer | Steel | Galvanized | 5/16 | 5/16 uss pattern hdg flat washer b18.22.1 | 958 |
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| 3Q, Inc. | IL | USS Flat Washer | Steel | Zinc/Yellow | 5/16 | 5/16 uss flat washer thru-hardened 1050 steel .0002 zinc yellow b18.22.1 | 310000 |
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| JET FITTING | CA | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 uss flt wash stl thru-hard zn 850100 b18.22.1 | 2500 |
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| JET FITTING | CA | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 uss f/w stl zinc DUSZP03120 b18.22.1 | 19431 |
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| JET FITTING | CA | USS Flat Washer | Steel | Galvanized | 5/16 | 5/16 uss flt wash low stl hdg 345002 b18.22.1 | 5124 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Yellow | 5/16 | 5/16 uss flat yellow zinc b18.22.1 | 18893 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 uss flat triv zinc b18.22.1 | 784 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 uss flat triv zinc b18.22.1 | 133313 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 uss flat triv zinc b18.22.1 | 25032 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Black | 5/16 | 5/16 uss flat 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 | 5/16 | 5/16 uss flat 18-8 s/s b18.22.1 | 51000 |
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| QFC | TX | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 | 5/16 uss flat 18-8 s/s b18.22.1 | 37800 |
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| QFC | TX | USS Flat Washer | Steel | Galvanized | 5/16 x 50 | 5/16 uss f/w hdg 50#/4150 b18.22.1 | 1 |
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| QFC | TX | USS Flat Washer | Steel | Galvanized | 5/16 | 5/16 hdg uss each 1#/83 aproxz b18.22.1 | 430 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 5/16 x 76 | 5/16 uss flat zinc (76/lb 3800/50lb) .375x.875x.083 b18.22.1 | 2 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 5/16 x 76 | 5/16 uss flat zinc (76/lb 3800/50lb) .375x.875x.083 b18.22.1 | 1 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 uss flat zinc each (76/lb) .375x.875x.083 b18.22.1 | 6537 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 uss flat zinc each (76/lb) .375x.875x.083 b18.22.1 | 12545 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 uss flat zinc each (76/lb) .375x.875x.083 b18.22.1 | 12447 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 uss flat zinc each (76/lb) .375x.875x.083 b18.22.1 | 1945 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 uss flat zinc each (76/lb) .375x.875x.083 b18.22.1 | 900 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Yellow | 5/16 | 5/16 yzp uss hard 372 b18.22.1 | 7189 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Yellow | 5/16 | 5/16 yzp uss hard 372 b18.22.1 | 200 |
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| B & K FAST | PA | USS Flat Washer | Steel | Galvanized | 5/16 | 5/16 uss flat washers hd galv b18.22.1 | 585.02 |
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| B & K FAST | PA | USS Flat Washer | Grade 8 | Zinc/Yellow | 5/16 | 5/16 uss thru-hard flat washers gr 8 z yellow b18.22.1 | 153.939 |
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| B & K FAST | PA | USS Flat Washer | Steel | Plain | 5/16 | 5/16 uss flat washers plain b18.22.1 | 44.075 |
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| B & K FAST | PA | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 uss flat washers zinc b18.22.1 | 55.038 |
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| QFC | TX | USS Flat Washer | Steel | Plain | 5/16 | 5/16 pln uss hard washer b18.22.1 | 3700 |
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| QFC | TX | USS Flat Washer | Steel | Plain | 5/16 | 5/16 uss flat washer plain each 90 .375x.875x.083 b18.22.1 | 726 |
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| QFC | TX | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 uss flatwasher zinc b18.22.1 | 830 |
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| QFC | TX | USS Flat Washer | Steel | Galvanized | 5/16 | 5/16 uss flat washer galvanized b18.22.1 | 215 |
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| JET FITTING | CA | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 x .875 x .083 | washer flat 5/16x.875x.083 stainless steel 18-8 uss b18.22.1 | 3785 |
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| JET FITTING | CA | USS Flat Washer | Steel | Zinc/Clear | 5/16 x .875 x .083 | 5/16x.875x.083 flat washer steel zinc plated uss b18.22.1 | 25396 |
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| JET FITTING | CA | USS Flat Washer | Steel | Galvanized | 5/16 | 5/16 washers flat washers uss steel flat washer hdg (inch) b18.22.1 | 415 |
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| JET FITTING | CA | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 washers flat washers (thru haroundened) uss steel flat washer (usa) thru-hardened zinc cr+3 (inch) b18.22.1 | 5 |
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| Wurth | Ont | USS Flat Washer | Steel | Galvanized | 5/16 | wsh flt uss a w st (hdg) 5/16 b18.22.1 | 238 |
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| THRDFAST | FL | USS Flat Washer | Grade 8 | Zinc/Yellow | 5/16 | gr8 USS f/w z&y domestic b18.22.1 | 8 |
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| THRDFAST | TN | USS Flat Washer | Steel | Plain | 5/16 | USS f/w b18.22.1 | 4,500 |
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| THRDFAST | AL | USS Flat Washer | Steel | Plain | 5/16 | USS f/w b18.22.1 | 41 |
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| THRDFAST | MS | USS Flat Washer | Steel | Plain | 5/16 | USS f/w b18.22.1 | 84 |
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| KBS | TN | USS Flat Washer | Steel | Plain | 5/16 | 5/16 uss flat/w b18.22.1 | 12,870 |
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| KBS | TN | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 uss flat/w plated b18.22.1 | 9,794 |
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| THRDFAST | AL | USS Flat Washer | Steel | Galvanized | 5/16 | USS f/w domestic hdg b18.22.1 | 2801 |
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| THRDFAST | AL | USS Flat Washer | Steel | Fluoropolymer-Based (Xylan, Fluorokote, Teflon) | 5/16 | USS f/w teflon blue b18.22.1 | 173 |
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| THRDFAST | OK | USS Flat Washer | Steel | Plain | 5/16 | USS f/w b18.22.1 | 100 |
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| WSB | KY | USS Flat Washer | Steel | Plain | 5/16 | q/washer flat uss a w all (mzyt) 5/16 b18.22.1 | 4,500 |
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| MMF | MI | USS Flat Washer | Steel | Zinc/Yellow | 5/16 | 5/16 hard uss flat washer zdy usa domestic b18.22.1 | 5600 |
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| MMF | MI | USS Flat Washer | Steel | Zinc/Yellow | 5/16 | 5/16 hard uss flat washer zinc yellow usa domestic b18.22.1 | 5600 |
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| MMF | MI | USS Flat Washer | Steel | Zinc/Yellow | 5/16 | 5/16 hard uss flat washer zdy usa domestic b18.22.1 | 5600 |
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| MMF | MI | USS Flat Washer | Steel | Zinc/Yellow | 5/16 | 5/16 hard uss flat washer zinc yellow usa domestic b18.22.1 | 5600 |
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| All Size | TX | USS Flat Washer | Steel | Galvanized | 5/16 | 5/16 uss washer galv b18.22.1 | 98 |
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| Davis | IL | USS Flat Washer | Steel | Galvanized | 5/16 | 5/16 uss flat washer-steel galvonized b18.22.1 | 5,000 |
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