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#4 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.
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| Buy USS Flat Washers from one of our FCH Network Members | ||||||||
|---|---|---|---|---|---|---|---|---|
| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| YANKEE | NH | USS Flat Washer | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4 | #4 uss flat washer stainless | 300 |
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| YANKEE | NH | USS Flat Washer | Steel | Phosphate | #4 | USS flat cold rolled blk phosphate | 674 |
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