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M4 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 | |
| THRDFAST | FL | USS Flat Washer | Steel | Plain | M4 | USS f/w | 840 |
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| THRDFAST | TN | USS Flat Washer | Steel | Plain | M42 | USS f/w | 8 |
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| THRDFAST | AL | USS Flat Washer | Steel | Plain | M4 | USS f/w | 139 |
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