6 x 1/2 Phillips Truss Head Sheet Metal Screw 18-8 (A2) Stainless Steel

6 x 1/2 Phillips Truss Head Sheet Metal Screw 18-8 (A2) Stainless Steel. Sheet metal screws or tapping screws are designed to bind sheet metal to wood and sometimes fiberglass. Manufactured with a sharper, more pronounced thread that allows the screw to better tap or penetrate metal surfaces.