| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a screw head holding tool capable of easily removing a head damaged screw. <P>SOLUTION: The holding tool 10 includes a bar-shaped holding tool body 1 and a nut member 2. The holding tool body 1 has a gripping part 11 at its tip end side, the gripping part having an open hole 1a so as to grip the outer periphery of a head 7a of a screw 7; and a tapered male thread 11t at the outer periphery which is diameter-expanded toward the end. The nut member 2 has a female thread 21t that can be screwed with the male thread 11t in the center. The holding tool body 1 forms a plurality of slits 11s in the axial direction toward the base side beyond the tapered male thread 11t from the tip end and have a plurality of split pieces 11d equally split in the outer peripheral direction. The hole 1a can be diameter-reduced by screwing the nut member 2 with the tapered male thread 11t, thereby reliably holding the outer periphery of the head 7a of the screw 7 and easily removing the screw with the damaged head 7a. <P>COPYRIGHT: (C)2013,JPO&INPIT |
