Screw comprises screw head, particularly having hexagon and external screw thread which is provided with screw shaft, where conically widened part is screwed by grub screw in slotted end portion

摘要

The screw (1) comprises a screw head (2), particularly having a hexagon and an external screw thread which is provided with a screw shaft (3). A conically widened part (9) is screwed by a grub screw (8) in a slotted end portion of the screw and causes spreading of the same and thus a fixation of the screw. The screw shaft is slotted at a front end area (6).