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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.
5,928 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 | 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 | 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 | Steel | Zinc/Clear | 3/16 | 3/16 USS flat 1/4 idx9/16 od18 guage 361/lb | 64745 |
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| Jackson | MS | USS Flat Washer | Steel | Zinc/Clear | 1/4 | 1/4 USS flat 5/16 idx3/4 od 16 gauge 149/lb | 48975 |
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| Jackson | MS | USS Flat Washer | Steel | Zinc/Clear | 5/16 | 5/16 USS flat 3/8 idx7/8 od 14 gauge 87/lb | 49807 |
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| Jackson | MS | USS Flat Washer | Steel | Zinc/Clear | 3/8 | 3/8 USS flat 7/16 idx1 od 14 gauge 67/lb | 80793 |
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| Jackson | MS | USS Flat Washer | Steel | Zinc/Clear | 7/16 | 7/16 USS flat 1/2 idx1 1/4 od 14 gauge 41/lb | 28950 |
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| Jackson | MS | USS Flat Washer | Steel | Zinc/Clear | 1/2 | 1/2 USS flat 9/16 idx1 3/8 od 12 gauge 26/lb | 41004 |
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| Jackson | MS | USS Flat Washer | Steel | Zinc/Clear | 9/16 | 9/16 USS flat 5/8 idx1 1/2 od 12 guage 22/lb | 9111 |
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| Jackson | MS | USS Flat Washer | Steel | Zinc/Clear | 5/8 | 5/8 USS flat 11/16 idx1 3/4 od 10 gauge 13/lb | 20644.9 |
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| Jackson | MS | USS Flat Washer | Steel | Zinc/Clear | 3/4 | 3/4 USS flat 13/16 idx2 od 9 gauge 9.1/lb | 14806.5 |
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| Jackson | MS | USS Flat Washer | Steel | Zinc/Clear | 7/8 | 7/8 USS flat 15/16 idx2 1/4 od 8 gauge 6.5/lb | 5356.48 |
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| Jackson | MS | USS Flat Washer | Steel | Zinc/Clear | 1 | 1 USS flat 1 1/16 idx2 1/2 od 8 gauge +/-5.3/lb | 5295.7 |
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| Jackson | MS | USS Flat Washer | Steel | Zinc/Clear | 1 1/8 | 1-1/8 USS flat 1 1/4 idx2 3/4 od 8 gauge 4.5/lb | 2057.5 |
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| Jackson | MS | USS Flat Washer | Steel | Zinc/Clear | 1 1/4 | 1-1/4 USS flat 1 3/8 idx3 od 8 gauge 3.8/lb | 1525 |
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| Jackson | MS | USS Flat Washer | Steel | Zinc/Clear | 1 3/8 | 1-3/8 USS flat 1 1/2 idx3 1/4 od 7 gauge 3/lb | 776 |
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| Jackson | MS | USS Flat Washer | Steel | Plain | 1 | 1 USS flat 1 1/16 idx2 1/2 od 5.3/lb | 1248 |
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| Jackson | MS | USS Flat Washer | Steel | Zinc/Clear | 1 1/2 | 1-1/2 USS flat 1 5/8 idx3 1/2 od 7 gauge 2.6/lb | 506 |
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| Jackson | MS | USS Flat Washer | Steel | Zinc/Clear | 1 5/8 | 1-5/8 USS flat 1 3/4 idx3 3/4 od 7 gauge 2.3/lb | 77.6 |
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| Jackson | MS | USS Flat Washer | Steel | Zinc/Clear | 1 3/4 | 1-3/4 USS flat 1 7/8 idx4 od7 gauge 2/lb | 193 |
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| MAINSOURC | NH | USS Flat Washer | Steel | Galvanized | 3/4 | 3/4 uss flat stl hdg | 89 |
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| TownCountry | AR | USS Flat Washer | Steel | Zinc/Yellow | 1/4 | 1 1/4 flat washer uss thru-hard yellow zinc | 100 |
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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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| ACCURATE | IL | USS Flat Washer | Steel | Zinc/Clear | 3/4 | flat -uss | 845 |
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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 | 949 |
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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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| CNB | IL | USS Flat Washer | Grade 8 | Zinc/Yellow | 3/4 | USS flat | 127 |
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| CNB | IL | USS Flat Washer | Grade 2 | Zinc/Clear | #10 | USS flat gr.2 z/p | 12200 |
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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 | 12.0382 |
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| Jay-Cee | MI | USS Flat Washer | Steel | Zinc/Clear | 3/8 | 3/8 u s s flat zinc | 89580 |
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| Jay-Cee | MI | USS Flat Washer | Steel | Zinc/Clear | 7/16 | 7/16 u s s flat zinc | 1400 |
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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 | 9760 |
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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 | 41.5388 |
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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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| IntScrew | FL | USS Flat Washer | Nylon (Polyamide) | Plain | 1/4 | 1/4 uss flat black 6/6 nylon | 14900 |
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| OneMonroe | MA | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .562 x 1.375 x .095 | washer flat .562 x 1.375 x .095 s/s ref 1/2uss | 536 |
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| OneMonroe | MA | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | .562 x 1.375 x .095 | washer flat .562 x 1.375 x .095 s/s ref 1/2uss | 215 |
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| OneMonroe | MA | USS Flat Washer | 316, 317, A4 Stainless | Plain | .317 x .750 x .065 | washer 1/4 inch uss flat 18 8 stainless .317 x .750 x .065 | 169 |
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| Future Fastener | TX | USS Flat Washer | Steel | Plain | 7/16 | 7/16 uss flat (blk) | 80 |
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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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| OneMonroe | 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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| OneMonroe | TX | USS Flat Washer | Steel | Zinc/Black | 7/16 | flat 7/16 uss steel zinc blk | 288 |
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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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| 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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