Tapping screws are considered externally threaded fasteners that "tap" their own mating threads in metallic and non-metallic
(such as plastic) materials. Some screws require a hole (exact hole size is often important), while others drill their own hole
("self drilling"). Each type is identified by a designation that describes its threads and point (tip). The threads will either be
spaced, similar to wood screws, or machine screw type. Point styles include "standard," sharp (a longer "standard" point), blunt
(like a machine screw) and drill (approximating a drill bit).
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