4.2mmx9.5mm Round Head Sheet Metal Self Tapping Drilling Screws 50pcs

Features: 304 Stainless Steel 8mm head diameter Pan/Round Head style self tapping screws 4.2mmx9.5mm. Sheet metal screws have large threads for use in sheet metal sometimes also used in plastic fiberglass or wood. Pan heads are slightly rounded with short vertical sides. 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. Widely used in electronics communication electric power products cultural goods environmental protection machinery etc.