| 摘要 |
<p>This object aims to provide a tapping screw for bone in which the timing of the completion of tightening thereof can be judged by a user. The tapping screw used for fixing a bone by a plate in a surgical operation is characterized in that the thread pitches of a tip threaded part (13) and a straight threaded part (12) are 0.6-0.75 mm, the root diameter (D) of the straight threaded part (12) is 0.85-1.4 mm, and the thickness (S) of the shortest portion of an unthreaded part (14) is 0.12 mm or less.</p> |
