Screws with large threads for use in sheet metal sometimes also used in plastic, fiberglass, or wood.

Sheet metal screws, Hex washer, Stainless steel 18-8, #8

Slotted hex washer head

Self tapping

Screws with coarse threads and a pointed end for use in sheet metal sometimes also used in plastic, fiberglass, or wood.

See also

Wood screw

Wood screws

Screws with a smooth shank and tapered point for use in wood.