Hole-forming and thread-forming screw and method for screwing them in

摘要

A hole-shaping and thread-forming screw (1) has a non-cutting hole-shaping end section (2) that ends in a point, a shaft section (4) provided with a thread (3) and an engagement section (5). The non-cutting hole-shaping end section (2) tapers towards its end. The whole screw is made of a stainless material, in particular its end section (2). When the screw (1) is driven in, a hole is shaped without cutting into the workpiece (7) and is then threaded by the screw (1) itself.