Square Drive Flat Head Sheet Metal Screws have sharp cutting threads that cut into soft materials. The shanks are threaded up to the undercut of the screw. Square Drive Flat Head Sheet Metal Screws make excellent fasteners for attaching metal hardware to wood because the fully threaded shank provides good retention in wood. Square Drive Screws offer more resistance to stripping than a standard Phillips Drive Screw. Flat head sheet metal screws are an ideal choice for creating a flush finish.
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