| 摘要 |
A screw (1), especially one that can be inserted into wood or wooden materials, consisting of a shank (2) with at least one thread (7,8), whereby a head (4) with an attack surface (5) for a tool is provided on one end and a substantially cylindrical drilling part (3) with a chip groove is provided on the other end. The thread (8)hat is directly adjacent to the drilling part (3) continues into said drilling part (3). At least one convolution (9) at the end of the thread crosses the chip groove (6) in the drilling part (3). |
