Flat Head Self Tapping Screw

DIN 7982,Phillips A self-tapping screw is a type of screw that taps and threads its own hole as it is installed. Different tapping styles are used with different materials. For example, self-tapping screws for metal utilize a gap in the continuity of the thread, which generates a flute and a cutting edge similar to those on a standard tap; self-tapping screws for wood or soft plastics often use a tip that tapers to a gimlet point, which forms a tap hole by displacing the surrounding material. Also known as self-drilling screws. Self tapping screws including: Type A self-tapping screws feature coarse threads and are commonly used in wood or thin metal materials from 0.015” to 0.05” thick. Type AB self-tapping screws feature fine threads, and are more effective for brittle materials. Type B self-tapping screws have blunt tips and are often used with plastics or thin metals from 0.05” to 0.2” thick.