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USS Flat Washer (ANSI ASME 18.22.1)
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.
0 USS Flat Washer (ansi b18.22.1), 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 | 25090.9 |
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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 | 21505 |
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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 | 41142.6 |
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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 | 19691.6 |
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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 | 30461 |
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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 | 2868.8 |
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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 | 28842.5 |
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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 | 20364.75 |
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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 | 4302.6 |
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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 | 5147.2 |
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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 | 1978.3 |
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| Jackson | MS | USS Flat Washer | Aluminum | Plain | 5/16 | USS flat | 427 |
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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 | 6400 |
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| Jackson | MS | USS Flat Washer | Steel | Galvanized | 5/16 | USS flat hot dip 3/8 idx7/8 od 87/lb | 4300 |
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| Jackson | MS | USS Flat Washer | Steel | Galvanized | 3/8 | USS flat hot dip 7/16 idx1 od 67/lb | 21661 |
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| Weaver | WA | USS Flat Washer | Steel | Zinc/Yellow | 3/4 | 3/4 hi alloy uss thick flat yellow zinc | 17 |
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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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| 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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| 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 | 186.4942 |
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| Jay-Cee | MI | USS Flat Washer | Steel | Zinc/Clear | 3/8 | 3/8 u s s flat zinc | 40890 |
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| Jay-Cee | MI | USS Flat Washer | Steel | Zinc/Clear | 7/16 | 7/16 u s s flat zinc | 1000 |
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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 | 110 |
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| Jay-Cee | MI | USS Flat Washer | Steel | Galvanized | 1/2 | 1/2 u s s flat hot dipped galvanized | 1240 |
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| Jay-Cee | MI | USS Flat Washer | Steel | Zinc/Clear | 5/8 | 5/8 u s s flat zinc | 32.3084 |
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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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| 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 | 636 |
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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 | 221 |
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| S+S Faste | OH | USS Flat Washer | Plain | M14 | m14 uss flat washer | 183 |
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| S+S Faste | OH | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1 1/8 | 1-1/8 uss flat washer 18-8 ss | 139 |
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| S+S Faste | OH | USS Flat Washer | Steel | Zinc/Clear | 1 1/8 | 1-1/8 uss flat washer zinc | 23 |
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| S+S Faste | OH | USS Flat Washer | Plain | 1 1/4 | 1-1/4 uss flat washer plain finish | 70 |
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| S+S Faste | OH | USS Flat Washer | Steel | Zinc/Clear | 1 1/4 | 1-1/4 uss flat washer zinc | 140 |
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| S+S Faste | OH | USS Flat Washer | Plain | 1 | 1 uss flat washer plain | 46 |
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| American | NY | USS Flat Washer | Grade 8 | Zinc/Yellow | 1/4 | 1/4 uss gr 8 flat washer zy | 4500 |
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| American | NY | USS Flat Washer | Grade 8 | Zinc/Yellow | 5/16 | 5/16 uss flat washer gr 8 zy | 1500 |
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| American | NY | USS Flat Washer | Steel | Zinc/Clear | 3/8 | 3/8 uss flat washer zinc pl | 47.3040298507526 |
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| American | NY | USS Flat Washer | Plain | 7/8 | 7/8 uss flat washer | 184 |
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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 | Grade 8 | Zinc/Yellow | 9/16 | 9/16 uss flat gr 8 zy | 250 |
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| American | NY | USS Flat Washer | Steel | Plain | 1/2 | USS flat | 58.63 |
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| American | NY | USS Flat Washer | Steel | Zinc/Clear | 7/8 | USS flat zp | 255 |
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| American | NY | USS Flat Washer | Grade 8 | Zinc/Yellow | 5/8 | USS flat gr 8 zy | 40 |
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| METRO IND | OH | USS Flat Washer | Brass | Plain | 3/4 | 3/4 uss flat washer brass | 1 |
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| C & S Fas | FL | USS Flat Washer | Plain | 1 1/2 | 1-1/2 uss flat washer plain | 175 |
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| C & S Fas | FL | USS Flat Washer | Galvanized | 7/8 | 7/8 uss flat washer hdg | 2363 |
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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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| 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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| 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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| 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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| 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 | 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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| 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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| 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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