| 摘要 |
The screw has a body part (2) and a tulip head arranged at axial ends of threaded shafts (1), where the tulip head is provided with a receiver for the body part opened in a direction of the threaded shafts. A bar receiver for fixing bars is formed between brackets (5) of the tulip head, and a body part holder (7) is arranged in the receiver. The body part holder holding the body part from below in a direction of the threaded shafts is pivotally mounted around an axis over a pivot, where the axis orients to a tulip head longitudinal axis. |
