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USS Flat Washers
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.
5,839 USS Flat Washer, showing 200, (click on any line for more information)
| Buy USS Flat Washers from one of our FCH Network Members | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| Jackson | MS | USS Flat Washer | Grade 8 | Zinc/Yellow | 1/4 | 1/4 USS gr 8 flat 5/16 idx 3/4 od dom.. | 50 |
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| Jackson | MS | USS Flat Washer | Grade 8 | Zinc/Yellow | 5/16 | 5/16 USS gr 8 flat 3/8 idx7/8 od dom.. | 50 |
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| Jackson | MS | USS Flat Washer | Grade 8 | Zinc/Yellow | 3/8 | 3/8 USS gr 8 flat 7/16 idx1 od dom.. | 50 |
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| Jackson | MS | USS Flat Washer | Grade 8 | Zinc/Yellow | 1/2 | 1/2 USS gr 8 flat 9/16 idx1 3/8 od dom.. | 50 |
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| Jackson | MS | USS Flat Washer | Grade 8 | Zinc/Yellow | 1/4 | 1/4 USS gr 8 flat 5/16 idx 3/4 od | 20348.9 |
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| Jackson | MS | USS Flat Washer | Grade 8 | Zinc/Yellow | 5/16 | 5/16 USS gr 8 flat 3/8 idx7/8 od | 19788 |
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| Jackson | MS | USS Flat Washer | Grade 8 | Zinc/Yellow | 3/8 | 3/8 USS gr 8 flat 7/16 idx1 od | 40582.2 |
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| Jackson | MS | USS Flat Washer | Grade 8 | Zinc/Yellow | 7/16 | 7/16 USS gr 8 flat 1/2 idx1 1/4 od | 18110.1 |
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| Jackson | MS | USS Flat Washer | Grade 8 | Zinc/Yellow | 1/2 | 1/2 USS gr 8 flat 9/16 idx1 3/8 od | 24500.6 |
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| Jackson | MS | USS Flat Washer | Grade 8 | Zinc/Yellow | 9/16 | 9/16 USS gr 8 flat 5/8 idx1 1/2 od | 3164.2 |
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| Jackson | MS | USS Flat Washer | Grade 8 | Zinc/Yellow | 5/8 | 5/8 USS gr 8 flat 11/16 idx1 3/4 od | 26168.1 |
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| Jackson | MS | USS Flat Washer | Grade 8 | Zinc/Yellow | 3/4 | 3/4 USS gr 8 flat 13/16 idx2 od | 17362 |
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| Jackson | MS | USS Flat Washer | Grade 8 | Zinc/Yellow | 7/8 | 7/8 USS gr 8 flat 15/16 idx2 1/4 od | 4220 |
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| Jackson | MS | USS Flat Washer | Grade 8 | Zinc/Yellow | 1 | 1 USS gr 8 flat 1 1/16 idx2 1/2 od | 3896.8 |
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| Jackson | MS | USS Flat Washer | Grade 8 | Zinc/Yellow | 1 1/8 | 1-1/8 USS gr 8 flat 1 1/4 idx2 3/4 od | 1393 |
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| Jackson | MS | USS Flat Washer | Aluminum | Plain | 5/16 | USS flat | 350 |
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| Jackson | MS | USS Flat Washer | Steel | Cadmium | 5/8 | 5/8 USS flat 11/16 idx1 3/4 od 13/lb | 53 |
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| Jackson | MS | USS Flat Washer | Steel | Galvanized | 1/4 | USS flat hot dip 5/16 idx3/4 od 149/lb | 6776 |
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| Jackson | MS | USS Flat Washer | Steel | Galvanized | 5/16 | USS flat hot dip 3/8 idx7/8 od 87/lb | 8484 |
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| Jackson | MS | USS Flat Washer | Steel | Galvanized | 3/8 | USS flat hot dip 7/16 idx1 od 67/lb | 19720 |
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| MAINSOURC | NH | USS Flat Washer | Steel | Galvanized | 3/4 | 3/4 uss flat stl hdg | 89 |
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| Jackson | MS | USS Flat Washer | Grade 8 | Plain | 5/8 x 1-15/32 | 9/16 uss grade 8 flat washer plain finish 5/8 id x 1-15/32 od | 900 |
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| Future Fastener | TX | USS Flat Washer | Steel | Plain | 7/16 | 7/16 uss flat (blk) | 80 |
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| Set Screw | IL | USS Flat Washer | Steel | Zinc/Clear | #10 | USS flat | inquire |
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| Set Screw | IL | USS Flat Washer | Steel | Plain | 1 | 1 USS flat finish | inquire |
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| Set Screw | IL | USS Flat Washer | Steel | Plain | 1/2 | USS flat - | inquire |
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| Set Screw | IL | USS Flat Washer | Steel | Zinc/Clear | 1/2 | USS flat | inquire |
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| Set Screw | IL | USS Flat Washer | Steel | Zinc/Clear | 3/8 | USS flat | inquire |
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| Set Screw | IL | USS Flat Washer | Steel | Zinc/Yellow | 3/8 | USS flat | inquire |
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| Set Screw | IL | USS Flat Washer | Steel | Zinc/Clear | 5/16 | USS flat | inquire |
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| Set Screw | IL | USS Flat Washer | 316, 317, A4 Stainless | Plain | 1/2 | USS flat 316 stainless | inquire |
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| Set Screw | IL | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4 | USS flat 18-8 s/s | inquire |
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| Set Screw | IL | USS Flat Washer | 316, 317, A4 Stainless | Plain | 3/8 | USS flat 316 stainless | inquire |
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| Set Screw | IL | USS Flat Washer | Steel | Zinc/Clear | 3/4 | USS flat waher plate | inquire |
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| Weaver | WA | USS Flat Washer | Steel | Zinc/Yellow | 3/4 | 3/4 hi alloy uss thick flat yellow zinc | 18 |
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| Weaver | WA | USS Flat Washer | Steel | Zinc/Yellow | 7/8 | 7/8 hi alloy uss thick flat yellow zinc | 6 |
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| Jay-Cee | MI | USS Flat Washer | Steel | Plain | 1/2 | u.s.s flat s | 25617 |
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| Jay-Cee | MI | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 u s s flat zinc | 49.614 |
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| Jay-Cee | MI | USS Flat Washer | Steel | Zinc/Clear | 3/8 | 3/8 u s s flat zinc | 4449 |
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| Jay-Cee | MI | USS Flat Washer | Steel | Zinc/Clear | 7/16 | 7/16 u s s flat zinc | 1800 |
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| Jay-Cee | MI | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 7/16 | 7/16 u s s flat 18-8 s/s | 5600 |
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| Jay-Cee | MI | USS Flat Washer | Steel | Zinc/Clear | 1/2 | 1/2 u s s flat zinc | 1310 |
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| Jay-Cee | MI | USS Flat Washer | Steel | Galvanized | 1/2 | 1/2 u s s flat hot dipped galvanized | 930 |
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| Jay-Cee | MI | USS Flat Washer | Steel | Zinc/Clear | 5/8 | 5/8 u s s flat zinc | 42.308 |
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| Jay-Cee | MI | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/8 u s s flat washer steel plain | inquire |
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| American | NY | USS Flat Washer | Steel | Galvanized | 5/8 | 5/8 uss flat hot dipped galvanized | 18.4592307692308 |
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| American | NY | USS Flat Washer | Steel | Galvanized | 1/2 | 1/2 uss flat hot dipped galvanized | 3.46 |
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| American | NY | USS Flat Washer | Steel | Galvanized | 3/4 | 3/4 uss flat hot dipped galvanized | 0.41 |
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| American | NY | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2 | 1/2 uss flat 18-8 304 steel | 713 |
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| American | NY | USS Flat Washer | Grade 8 | Zinc/Yellow | 9/16 | 9/16 uss flat gr 8 zy | 600 |
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| American | NY | USS Flat Washer | Steel | Plain | 1/2 | USS flat | 59.4 |
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| American | NY | USS Flat Washer | Steel | Zinc/Clear | 7/8 | USS flat zp | 255 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 1 | 1 uss f/w hrd stl yel znc (2-1/2 od) b18.22.1 | 163 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 1 | 1 uss f/w extra thick hrd stl yellow zinc (2-1/2 od) b18.22.1 | 91 |
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| Ababa | CA | USS Flat Washer | Steel | Galvanized | 1-2 1/2 | 1 uss f/w stl hdg (2-1/2 od) b18.22.1 | 290 |
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| Ababa | CA | USS Flat Washer | Steel | Plain | 1-2 1/2 | 1 uss f/w stl pln (2-1/2 od) b18.22.1 | 123 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Clear | 1-2 1/2 | 1 uss f/w stl znc (2-1/2 od) b18.22.1 | 649 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Clear | 10 9/16 | #10 uss f/w stl znc (9/16 od) b18.22.1 | 20569 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 1 1/4 | 1 1/4 uss f/w hrd stl yel znc (3 od) b18.22.1 | 3 |
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| Ababa | CA | USS Flat Washer | Steel | Galvanized | 1 1/4 | 1 1/4 uss f/w stl hdg (3 od) b18.22.1 | 24 |
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| Ababa | CA | USS Flat Washer | Steel | Plain | 1 1/4 | 1 1/4 uss f/w stl pln (3 od) b18.22.1 | 65 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Clear | 1 1/4 | 1 1/4 uss f/w stl znc (3 od) b18.22.1 | 131 |
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| Ababa | CA | USS Flat Washer | Steel | Plain | 1 1/8 | 1 1/8 uss f/w hrd stl pln (2-3/4 od) b18.22.1 | 1 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 1 1/8 | 1 1/8 uss f/w hrd stl yel znc (2-3/4 od) b18.22.1 | 130 |
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| Ababa | CA | USS Flat Washer | Steel | Galvanized | 1 1/8 | 1 1/8 uss f/w stl hdg (2-3/4 od) b18.22.1 | 21 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Clear | 1 1/8 | 1 1/8 uss f/w stl znc (2-3/4 od) b18.22.1 | 27 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Clear | 2-4 1/2 | 2 uss f/w stl znc (4-1/2 od) b18.22.1 | 23 |
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| Ababa | CA | USS Flat Washer | Steel | Plain | 2 1/2-5 | 2-1/2 uss f/w stl pln (5 od) b18.22.1 | 9 |
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| Ababa | CA | USS Flat Washer | Steel | Plain | 1 3/8 | 1 3/8 uss f/w stl pln (3-1/4 od) b18.22.1 | 95 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Clear | 1 3/8 | 1 3/8 uss f/w stl znc (3-1/4 od) b18.22.1 | 124 |
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| Ababa | CA | USS Flat Washer | Steel | Zinc/Yellow | 1 1/2 | 1 1/2 uss f/w hrd stl yel znc (3-1/2 od) b18.22.1 | 4 |
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| Ababa | CA | USS Flat Washer | Steel | Plain | 1 1/2 | 1 1/2 uss f/w stl pln (3-1/2 od) b18.22.1 | 94 |
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| ACCURATE | IL | USS Flat Washer | Steel | Zinc/Clear | 3/4 | flat -uss | 413 |
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| ACCURATE | IL | USS Flat Washer | Steel | Galvanized | 1 1/2 | flat -uss hot dip | 4 |
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| ACCURATE | IL | USS Flat Washer | Steel | Galvanized | 5/16 | flat -uss hot dip | 2749 |
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| JHP Fasteners | TX | USS Flat Washer | 316, 317, A4 Stainless | Plain | 1/4 x 18 8 .317 x .750 | 1/4 inch uss flat 18 8 stainless .317x.750x.065 | 319 |
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| SII | IN | USS Flat Washer | Steel | Zinc/Clear | 3/16 | 3/16 zinc uss flat washer) | 27 |
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| SII | IN | USS Flat Washer | Steel | Zinc/Clear | 1/4 | 1/4 zinc uss flat washer) | 20155 |
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| SII | IN | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 zinc uss flat washer) | 2133 |
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| SII | IN | USS Flat Washer | Steel | Zinc/Clear | 3/8 | 3/8 zinc uss flat washer) | 100 |
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| SII | IN | USS Flat Washer | Steel | Zinc/Clear | 7/16 | 7/16 zinc uss flat washer) | 2370 |
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| SII | IN | USS Flat Washer | Steel | Zinc/Clear | 1/2 | 1/2 zinc uss flat washer) | 7212 |
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| SII | IN | USS Flat Washer | Steel | Zinc/Clear | 9/16 | 9/16 zinc uss flat washer) | 840 |
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| SII | IN | USS Flat Washer | Steel | Zinc/Clear | 5/8 | 5/8 zinc uss flat washer) | 4190 |
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| SII | IN | USS Flat Washer | Steel | Plain | 3/4 | 3/4 plain finish uss flat washer) | 377 |
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| SII | IN | USS Flat Washer | Steel | Zinc/Clear | 3/4 | 3/4 zinc uss flat washer) | 260 |
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| SII | IN | USS Flat Washer | Steel | Zinc/Clear | 7/8 | 7/8 zinc uss flat washer) | 389 |
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| SII | IN | USS Flat Washer | Steel | Zinc/Clear | 1 | 1 zinc uss flat washer) | 472 |
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| SII | IN | USS Flat Washer | Steel | Zinc/Clear | 1 1/8 | 1-1/8 zinc uss flat washer) | 50 |
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| SII | IN | USS Flat Washer | Steel | Zinc/Clear | 1 1/2 | 1-1/2 zinc uss flat washer) | 37 |
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| SII | IN | USS Flat Washer | Grade 8 | Zinc/Yellow | 1/4 | 1/4 grd8 uss yz flat washer) | 4785 |
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| SII | IN | USS Flat Washer | Grade 8 | Zinc/Yellow | 5/16 | 5/16 grd8 uss yz flat washer) | 2249 |
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| SII | IN | USS Flat Washer | Grade 8 | Zinc/Yellow | 3/8 | 3/8 grd8 uss yz flat washer) | 1311 |
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| SII | IN | USS Flat Washer | Grade 8 | Zinc/Yellow | 7/16 | 7/16 grd8 uss yz flat washer) | 547 |
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| SII | IN | USS Flat Washer | Grade 8 | Zinc/Yellow | 1/2 | 1/2 grd8 uss yz flat washer) | 950 |
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| SII | IN | USS Flat Washer | Grade 8 | Zinc/Yellow | 9/16 | 9/16 grd8 uss yz flat washer) | 350 |
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| JHP Fasteners | TX | USS Flat Washer | Steel | Zinc/Black | 7/16 | flat 7/16 uss steel zinc blk | 288 |
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| IntScrew | FL | USS Flat Washer | Nylon (Polyamide) | Plain | 1/4 | 1/4 uss flat black 6/6 nylon | 15200 |
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| Lippin | CA | USS Flat Washer | Steel | Zinc/Clear | 3/16-1550 | 3/16 flat washer uss zp 5# (1550) | 8 |
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| Lippin | CA | USS Flat Washer | Steel | Zinc/Clear | 1/4-745 | 1/4 flat washer uss zp 5# (745) | 227 |
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| Lippin | CA | USS Flat Washer | Steel | Zinc/Clear | 5/16-450 | 5/16 flat washer uss zp 5# (450) | 69 |
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| Lippin | CA | USS Flat Washer | Steel | Zinc/Clear | 3/8-350 | 3/8 flat washer uss zp 5# (350) | 45 |
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| Lippin | CA | USS Flat Washer | Steel | Zinc/Clear | 7/16-205 | 7/16 flat washer uss zp 5# (205) | 78 |
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| Lippin | CA | USS Flat Washer | Steel | Zinc/Clear | 1/2-130 | 1/2 flat washer uss zp 5# (130) | 177 |
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| Lippin | CA | USS Flat Washer | Steel | Zinc/Clear | 9/16-95 | 9/16 flat washer uss zp 5# (95) | 22 |
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| Lippin | CA | USS Flat Washer | Steel | Zinc/Clear | 5/8-65 | 5/8 flat washer uss zp 5# (65) | 54 |
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| Lippin | CA | USS Flat Washer | Steel | Zinc/Clear | 3/4-44 | 3/4 flat washer uss zp 5# (44) | 231 |
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| Lippin | CA | USS Flat Washer | Steel | Zinc/Clear | 7/8-33 | 7/8 flat washer uss zp 5# (33) | 410 |
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| Lippin | CA | USS Flat Washer | Steel | Zinc/Clear | 1 flat washer uss zp 5# (26) | 315 |
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| Lippin | CA | USS Flat Washer | Steel | Zinc/Clear | 1 1/8 | 1 1/8 flat washer uss zp 5# (23) | 11 |
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| Lippin | CA | USS Flat Washer | Steel | Zinc/Clear | 1 1/4 | 1 1/4 flat washer uss zp 5# (20) | 69 |
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| Lippin | CA | USS Flat Washer | Steel | Zinc/Clear | 1 3/8 | 1 3/8 flat washer uss zp 5# (15) | 1 |
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| CNB | IL | USS Flat Washer | Grade 8 | Zinc/Yellow | 3/4 | USS flat | 127 |
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| CNB | IL | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 | USS flat 18-8 s/s dom. | 13 |
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| CNB | IL | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8 | USS flat 18-8 s/s dom. | 2 |
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| CNB | IL | USS Flat Washer | Grade 2 | Plain | 1 1/2 | USS flat dom. | 58 |
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| CNB | IL | USS Flat Washer | Grade 2 | Zinc/Clear | #10 | USS flat gr.2 z/p | 18210 |
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| American | NY | USS Flat Washer | Steel | Galvanized | 3/4 | USS flat hot dipped | 162.13 |
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| American | NY | USS Flat Washer | Steel | Zinc/Clear | 3/4 | USS flat zp | 22.01 |
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| American | NY | USS Flat Washer | Grade 8 | Zinc/Yellow | 5/8 | USS flat gr 8 zy | 172 |
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