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4 1/2 Sheetmetal Screws (ASME B18. 6.4)

Sheet Metal Screws are widely used, have many different head and drive types, but usually have a sharp point and a coarse thread pattern that can easily cut and form a thread in pre-drilled sheet metal, but not in heavier metal.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
THRDFASTFLSelf-Tapping Sheet Metal Screw (types a,b,ab)AluminumPlain4 1/2 x 7/84 1/2inx7/8in 80grit c-type-alum oxide resin fiber disc b18.6.413
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THRDFASTFLSelf-Tapping Sheet Metal Screw (types a,b,ab)AluminumPlain4 1/2 x 7/84 1/2inx7/8in 50grit c-type-alum oxide resin fiber disc b18.6.425
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