| 摘要 |
By advancing a rotatable feed rod (5) with a threaded part (1) such as a bolt or a nut inserted into a socket hole (6) at a front end thereof, the threaded part (1) is supplied and tightened to an object such as a threaded hole or a bolt. In order to prevent the part (1) from dropping off or dislocating on its way of feeding the part (1) is advanced to the vicinity of the object with the part being restrained by, for example, a closure member (31), and then the part (1) is inserted into the socket hole (6) of the feed rod (5). Finally, the feed rod (5) is further advanced until the part (1) arrives at the object and is tightened thereto.
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