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USS Flat Washers , ASTM F1941-10 Fe/Zn-Ni

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
SupplierLocTypeMaterialFinishSizeDescriptionQty 
CenturyNYUSS Flat WasherSteelASTM F1941-10 Fe/Zn-Ni1/2 flat washer alkaline zinc nickel astm b841 cl1 typeb gr3 nickel alloy electrodeposited w/yellow chromate conversion coating base part fw032uss02211
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WDMBIAUSS Flat WasherSteelASTM F1941-10 Fe/Zn-NiM x 47003/8flat uss a w st (gmw4700blk) 3/8 (W040)535
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