| 摘要 |
<p>A bolt (10) is provided with a threaded part (13) and a cylindrical part (14), and is used for securing a member (20) to a member (30). The treaded part (13) of the bolt (10) has external threading (13a) formed on the external peripheral surface. The external threading (13a) engages internal threading formed on the internal peripheral surface of a threaded hole (31) when the threaded part (13) is screwed into the threaded hole (31) of the member (30). The cylindrical part (14) of the bolt (10) is formed into a shape that fits into a counterbore hole part (32) formed in the opening of the threaded hole (31), in accompaniment with the threaded part (13) being screwed into the threaded hole (31).</p> |
