Screws with coarse threads and a pointed end for use in sheet metal sometimes also used in plastic, fiberglass, or wood.
Oval heads are countersunk (cone shaped under the head) with a rounded top. Phillips drive is x-shaped for installation with a Phillips screw driver.
A corrosion resistant steel alloy. The most common stainless steel for general hardware use.
Screws with a smooth shank and tapered point for use in wood.
Construction screws intended for fastening drywall sheets to studs.