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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.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
Infasco DOHUSS Flat WasherSteelZinc/Clear3/8 b.s. (7/16 hole)3/8 b.s. (7/16 hole) uss flat washer b18.22.1 type-a/w std zclcom14900
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Infasco DOHUSS Flat WasherSteelZinc/Yellow9/16 bolt (5/8 hole)9/16 bolt (5/8 hole) uss thru-hard. flat washer type-a/w std zy+b421850
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Infasco DGAUSS Flat WasherSteelZinc/Yellow1/2 b.s. (9/16 hole)1/2 b.s. (9/16 hole) uss flat washer b18.22.1 type-a/w std zy920
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Infasco DILUSS Flat WasherSteelZinc/Yellow1/2 b.s. (9/16 hole)1/2 b.s. (9/16 hole) uss flat washer b18.22.1 type-a/w std zy1520
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Infasco DOHUSS Flat WasherSteelZinc/Yellow9/16 bolt (5/8 hole)9/16 bolt (5/8 hole) uss thru-hard. flat washer type-a/w std zy+b421850
    Contact_Supplier
Infasco DGAUSS Flat WasherSteelZinc/Yellow1/2 b.s. (9/16 hole)1/2 b.s. (9/16 hole) uss flat washer b18.22.1 type-a/w std zy920
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Infasco DOHUSS Flat WasherSteelZinc/Clear13/1613/16 uss flat washer b18.22.1 type-a/w std zclcom 3/4 b.s. ( hole)600
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Infasco DTXUSS Flat WasherSteelZinc/Yellow9/169/16 uss flat washer b18.22.1 type-a/w std zy 1/2 b.s. ( hole)920
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Infasco DTXUSS Flat WasherSteelZinc/Clear5/165/16 uss flat washer b18.22.1 type-a/w std zclcom 1/4 b.s. ( hole)640
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Infasco DGAUSS Flat WasherSteelZinc/Clear5/165/16 uss flat washer b18.22.1 type-a/w std zclcom 1/4 b.s. ( hole)640
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Infasco DILUSS Flat WasherSteelPlain7/167/16 uss flat washer b18.22.1 type-a/w std p 3/8 b.s. ( hole) 25 lb1740
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Infasco DOHUSS Flat WasherSteelZinc/Clear3/8 b.s. (7/16 hole)3/8 b.s. (7/16 hole) uss flat washer b18.22.1 type-a/w std zclcom14900
    Contact_Supplier
Infasco DILUSS Flat WasherSteelZinc/Yellow1/2 b.s. (9/16 hole)1/2 b.s. (9/16 hole) uss flat washer b18.22.1 type-a/w std zy1520
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