| 摘要 |
The invention related to the bolt and nut which easily can be engaged or disengaged by rotation movement of one times regardless of engaged or disengaged depth of a bolt and nut. The bolt and nut according to the present invention comprise a bolt (11) having a space member (15) formed in longitudinal direction and a threaded member (14), and a nut (12) having a space member (15) formed in longitudinal direction and threaded member (14). |
