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USS Flat Washers , Black Oxide
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.
102 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 | |
| YANKEE | NH | USS Flat Washer | Steel | Black Oxide | #10 | #10 uss flat washer wide cold rolled steel blk pho | 584 |
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| NAPPCO | TX | USS Flat Washer | Steel | Black Oxide | 5/16 | 5/16 flat uss thruhardenedstl blk (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) | 1089 |
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| NAPPCO | TX | USS Flat Washer | Steel | Black Oxide | 5/16 | 5/16 flat uss thruhardenedstl blk (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) (180-FLAT WASHERS) | 5133 |
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| Mansco | MI | USS Flat Washer | Grade 8 | Black Oxide | .375 x .875 x .064 | .375 id x .875 od x .064/.1040 thk 5/16 uss f/w gr8 black luster | 2420 |
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| Mansco | MI | USS Flat Washer | Steel | Black Oxide | 3/8-.43 | 3/8 USS f/w -.433/.453 idx.993/1.030 odx.064/.1040 thk | 16806 |
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| Mansco | MI | USS Flat Washer | Steel | Black Oxide | 3/16 uss f/w blk ox-.245/.265 id x .557/.577 od x .036/.065 thk | 12300 |
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| Future Fastener | TX | USS Flat Washer | Steel | Black Oxide | 1 | 1 uss flat blk | 174 |
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| Future Fastener | TX | USS Flat Washer | Steel | Black Oxide | 3/8 | 3/8 uss flat washer blk | 3298 |
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| Future Fastener | TX | USS Flat Washer | Steel | Black Oxide | 1/2 | 1/2 uss flat washer blk | 1488 |
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| Future Fastener | TX | USS Flat Washer | Steel | Black Oxide | 5/8 | 5/8 uss flat washer blk | 651 |
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| Future Fastener | TX | USS Flat Washer | Steel | Black Oxide | 3/4 | 3/4 uss flat washer blk | 319 |
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| Future Fastener | TX | USS Flat Washer | Steel | Black Oxide | 1 1/4 | 1 1/4 uss flat washer blk | 68 |
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| Future Fastener | TX | USS Flat Washer | Steel | Black Oxide | 2 | 2 uss flat washer blk | 62 |
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| Future Fastener | TX | USS Flat Washer | Steel | Black Oxide | 1 3/4 | 1 3/4 uss washer blk | 25 |
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| Future Fastener | TX | USS Flat Washer | Steel | Black Oxide | 1 7/8 | 1 7/8 uss flat washer blk | 25 |
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| Future Fastener | TX | USS Flat Washer | Steel | Black Oxide | 2 1/2 | 2-1/2 uss flat washer blk | 42 |
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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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| MESAFAST | CA | USS Flat Washer | Steel | Black Oxide | 1/4 | USS flat stl black ox (149/ #) | 9.5 |
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| MESAFAST | CA | USS Flat Washer | Steel | Black Oxide | 5/8 | USS flat (13/#) | 0.3 |
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| MESAFAST | CA | USS Flat Washer | Steel | Black Oxide | 1/2 | USS flat (24/#) | 0.4 |
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| MESAFAST | CA | USS Flat Washer | Steel | Black Oxide | #10 3/16 | #10 (3/16) USS f/w stl black ox (330/ #) | 0.4 |
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| MESAFAST | CA | USS Flat Washer | Steel | Black Oxide | 5/16 | USS flat stl black ox (90/ #) | 0.8 |
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| Cal Fastenrs | CA | USS Flat Washer | Steel | Black Oxide | 1/4 | USS f/w black ox see 32x75x06o | 900 |
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| Cal Fastenrs | CA | USS Flat Washer | Steel | Black Oxide | #10 | USS f/w black ox | 13,760 |
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| Ababa | CA | USS Flat Washer | Steel | Black Oxide | 1/4 uss f/w stl blk ox wax (3/4 od) b18.22.1 | 3275 |
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| Mansco | MI | USS Flat Washer | Steel | Black Oxide | 7/16-.495 | 7/16 uss f/w blk ox-.495/.515 id x 1.243/1.280 od x .064/.1040 thk | 2500 |
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| ACCURATE | IL | USS Flat Washer | Steel | Black Oxide | 1/4 | flat -uss | 17708 |
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| ACCURATE | IL | USS Flat Washer | Steel | Black Oxide | 5/16 | flat - uss | 8098 |
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| ACCURATE | IL | USS Flat Washer | Steel | Black Oxide | #10 | flat - USS blk ox | 9988 |
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| Century | NY | USS Flat Washer | Steel | Black Oxide | #10 uss flat washer steel black ox | 1662 |
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| Century | NY | USS Flat Washer | Steel | Black Oxide | 5/8 uss flat washer steel black ox | 1021 |
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| Century | NY | USS Flat Washer | Steel | Black Oxide | 1/4 uss flat washer steel black ox | 594 |
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| Liberty | IL | USS Flat Washer | Steel | Black Oxide | 1/4 | USS flat black oxide | 1,750 |
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| Liberty | IL | USS Flat Washer | Steel | Black Oxide | 1 | 1 USS flat | 71 |
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| Liberty | IL | USS Flat Washer | Steel | Black Oxide | 7/8 | USS flat black oxide | 176 |
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| Liberty | IL | USS Flat Washer | Steel | Black Oxide | 3/8 | USS flat black oxide | 541 |
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| Liberty | IL | USS Flat Washer | Steel | Black Oxide | #10 | USS flat black oxide | 10,400 |
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| Liberty | IL | USS Flat Washer | Steel | Black Oxide | 1/2 | USS flat black oxide | 200 |
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| Komar | IL | USS Flat Washer | Steel | Black Oxide | 5/16 x 3/8 x 7/8 | 5/16 uss flat 3/8x7/8x5/64 black ox | 1350 |
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| Komar | IL | USS Flat Washer | Steel | Black Oxide | 1/2 x 9/16 x 1 3/8 | 1/2 uss flat 9/16x1 3/8x7/64 black ox | 1100 |
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| Komar | OH | USS Flat Washer | Steel | Black Oxide | 1 uss flat washer 1 1/16 x 2 1/2 x 11/64 black oxide | 65 |
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| American | NY | USS Flat Washer | Steel | Black Oxide | 1/4 | USS flat black ox | 21.53 |
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| American | NY | USS Flat Washer | Steel | Black Oxide | 1/4 | 1/4 uss flat washer black ox | 12.32 |
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| Alma Bolt | MI | USS Flat Washer | Steel | Black Oxide | 3/8 | USS flat finish | 804 |
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| Fastener | OH | USS Flat Washer | Steel | Black Oxide | 5/8 | flat uss 5/8 steel blk ox | 181 |
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| Fastener | OH | USS Flat Washer | Steel | Black Oxide | 3/8 | flat 3/8 uss steel black oxide | 400 |
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| SWACO | OH | USS Flat Washer | Steel | Black Oxide | 5/16-.312 | 5/16 (.312) uss flat washer steel black oxide | 2438 |
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| SWACO | OH | USS Flat Washer | Steel | Black Oxide | 1/2 | 1/2 uss flat washer steel black oxide | 335 |
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| SWACO | OH | USS Flat Washer | Steel | Black Oxide | 7/16 | 7/16 uss flatwasher black oxide | 715 |
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| SWACO | OH | USS Flat Washer | Steel | Black Oxide | 1/4 | 1/4 uss f/w steel blk ox | 23213 |
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| SWACO | OH | USS Flat Washer | Steel | Black Oxide | #10 | #10 uss flat washer steel black oxide | 16715 |
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| SWACO | OH | USS Flat Washer | Steel | Black Oxide | .375 | 3/8 (.375) uss flat washer steel black oxide | 6417 |
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| Global | CA | USS Flat Washer | Steel | Black Oxide | #10 | USS flat | 13,170 |
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| Express | CA | USS Flat Washer | Steel | Black Oxide | 5/16 | 5/16 uss flat black oxide | 3000 |
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| UNEEDA | NJ | USS Flat Washer | Steel | Black Oxide | 3/16 | USS flat blk | 88 |
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| UNEEDA | NJ | USS Flat Washer | Steel | Black Oxide | 5/16 | USS flat blk | 33 |
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| Komar | IL | USS Flat Washer | Steel | Black Oxide | 1/2 | USS flat 9/16x1 3/8x7/64 black ox | 1100 |
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| Komar | IL | USS Flat Washer | Steel | Black Oxide | 5/16 x 3/8 x 7/8 | 5/16 uss flat 3/8x7/8x5/64 black ox | 1350 |
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| IPC | VA | USS Flat Washer | Steel | Black Oxide | 1 1/2 | 1-1/2 uss flat black ox | 78 |
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| Northern | MN | USS Flat Washer | Steel | Black Oxide | s/o #10 (3/16) uss flat washer black rie4037a 362 pcs/# | 97 |
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| Northern | MN | USS Flat Washer | Steel | Black Oxide | s/o 1/4 uss flat washer black rie4037a 149 pcs/# | 129 |
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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 | Black Oxide | 3/8 x .375 | 3/8 (.375) uss flat steel black oxide 37WUSSB b18.22.1 | 6914 |
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| Cal Fastenrs | CA | USS Flat Washer | Steel | Black Oxide | 5/16 | USS f/w black ox USS f/w | 1,500 |
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| Delta | TX | USS Flat Washer | Steel | Black Oxide | 5/16 | flat washer uss bl ack oxide 5/16 (7/8 OD) | 112 |
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| Delta | TX | USS Flat Washer | Steel | Black Oxide | 1/4 | flat washer uss black oxide 1/4 (3/4 OD) | 6650 |
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| Siena | IA | USS Flat Washer | Steel | Black Oxide | 3/8 | 3/8 uss standard flat washersteel hardenedblack oxide | 498 |
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| Arden | WI | USS Flat Washer | Steel | Black Oxide | 5/16 | 5/16 fw uss stl blk | inquire |
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| Arden | WI | USS Flat Washer | Steel | Black Oxide | 3/4 | 3/4 fw uss stl 96hr blk | inquire |
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| ACF | CA | USS Flat Washer | Steel | Black Oxide | 0.500 x 1.250 x .083 | 0.500x1.250x.083 uss steel flatwasher black oxide | 190 |
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| ACF | CA | USS Flat Washer | Steel | Black Oxide | 0.375 x .875 x .083 | 0.375x.875x.083 uss steel flatwasher black oxide | 4475 |
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| Kanebridge | IL | USS Flat Washer | Steel | Black Oxide | #10 | #10 uss flat washer black oxide | 625,000 |
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| Kanebridge | IL | USS Flat Washer | Steel | Black Oxide | 3/8 | 3/8 uss flat washer black oxide | 625,000 |
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| Kanebridge | IL | USS Flat Washer | Steel | Black Oxide | 1/4 | 1/4 inch uss flat washer black oxide | 625,000 |
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| Kanebridge | IL | USS Flat Washer | Steel | Black Oxide | 5/16 | 5/16 uss flat washer black oxide | 625,000 |
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| Kanebridge | IL | USS Flat Washer | Steel | Black Oxide | 5/8 | 5/8 uss flat washer black oxide | 625,000 |
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| Kanebridge | IL | USS Flat Washer | Steel | Black Oxide | 7/16 | 7/16 uss flat washer black oxide | 625,000 |
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| Kanebridge | IL | USS Flat Washer | Steel | Black Oxide | 7/8 | 7/8 uss flat washer black oxide | 625,000 |
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| Kanebridge | IL | USS Flat Washer | Steel | Black Oxide | 1/2 | 1/2 uss flat washer black oxide | 625,000 |
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| Kanebridge | IL | USS Flat Washer | Steel | Black Oxide | 3/4 | 3/4 uss flat washer black oxide | 625,000 |
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| Sonfast | SC | USS Flat Washer | Steel | Black Oxide | 5/16 | 5/16 uss flat washer steel black oxide | 7,100 |
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| Sonfast | SC | USS Flat Washer | Steel | Black Oxide | 1/4 | 1/4 uss flat washer black oxide | 4,000 |
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| QFC | TX | USS Flat Washer | Steel | Black Oxide | 5/8 | 5/8 uss flat washer black oxide b18.22.1 | 550 |
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| QFC | TX | USS Flat Washer | Steel | Black Oxide | 1/2 | 1/2 uss flat washer black oxide b18.22.1 | 1958 |
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| ZAL INDUS | CA | USS Flat Washer | Steel | Black Oxide | 5/8 | 5/8 uss flat washer bl/ox | 648 |
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| ZAL INDUS | CA | USS Flat Washer | Steel | Black Oxide | #10 | #10 uss flat washer bl/ox | 9,960 |
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| ZAL INDUS | CA | USS Flat Washer | Steel | Black Oxide | 5/16 | 5/16 uss flat washer bl/ox | 950 |
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| ZAL INDUS | CA | USS Flat Washer | Steel | Black Oxide | 1 1/4 | 1 1/4 uss flat washer bl/ox | 140 |
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| ZAL INDUS | CA | USS Flat Washer | Steel | Black Oxide | 1 1/8 | 1 1/8 uss flat washer bl/ox | 120 |
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| ZAL INDUS | CA | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Black Oxide | 3/8 | 3/8 uss flat washer 18-8stn. bl/ox | 650 |
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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 | Steel | Black Oxide | 1/2 x 1 3/8 x .109 | 1/2x1-3/8x.109 uss flat washers steel black oxide b18.22.1 | 388 |
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| OBRIEN | OH | USS Flat Washer | Steel | Black Oxide | 5/8 | USS f/w black ox | 463 |
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| OBRIEN | OH | USS Flat Washer | Steel | Black Oxide | 1/4 | USS f/w | 190 |
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| OBRIEN | OH | USS Flat Washer | Steel | Black Oxide | 3/8 | USS flat | 4730 |
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| OBRIEN | OH | USS Flat Washer | Steel | Black Oxide | 1/2 | USS flat | 700 |
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| WSB | KY | USS Flat Washer | Steel | Black Oxide | 1/2 | washer flat uss a w st (bo) 1/2 b18.22.1 | 40,978 |
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| GUIDON | NJ | USS Flat Washer | Steel | Black Oxide | 1/4 | 14 |
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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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| ACCURATE | IL | USS Flat Washer | Steel | Black Oxide | 3/8 | uss- flat flat s blk ox | 41,000 |
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| ACCURATE | IL | USS Flat Washer | Steel | Black Oxide | uss- flat flat s blk ox | 50,000 |
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| ACCURATE | IL | USS Flat Washer | Steel | Black Oxide | M16 | uss- flat flat s blk ox | 46,000 |
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