Production of a screw having a bore tip for securing wood constructions comprises forming the thread and the tapping point in a common finishing step by rolling

摘要

Production of a screw having a bore tip (4) comprises forming the thread (2) and the tapping point (7, 7') in a common finishing step by rolling. The material displaced by the tool during insertion of the tapping point into the screw core (8) is guided away from the screw core via the tip. Preferred Features: The material of the screw core displaced during formation of the tapping point is fed to a slug (5) formed on the tip of the screw.