Wood screw for use in e.g. handicraft field, has screw body comprising thread extended along axis of screw, where thread part and screw axis form attack angle larger than angle formed by another thread part and axis

摘要

The screw (1) has a cylindrical screw body (2) comprising a helical screw thread (3) extended along an axis (A-A) of screw from a pointed end (4) of the body. The body carries a screw head (6) at its opposite end. The screw head has a cavity for receiving an endpiece of a turnscrewer. The thread has a thread part located near the pointed end and followed by another thread part. The former thread part and the screw axis form an attack angle larger than an angle formed by the latter thread part and the axis.