| 摘要 |
PROBLEM TO BE SOLVED: To easily and strongly fix a coil nut to a mounted member. SOLUTION: In this coil nut 3, a tightly winding part 21 and a lead winding part 22 screwed around this tapping screw 2 are formed by winding one wire having elasticity. The mounting hole 34 of a mounted member 11 is formed smaller than the outside diameter size of the tightly winding coil part 21. When the tapping screw 2 is covered with the coil nut 3 and screwed in the mounting hole 34, the tightly winding part 21 is bitten into the mounting hole 34 while being extended. When the tapping screw 2 is rotated in an opposite direction, the coil nut 3 remains in the mounting hole 34, and the tapping screw 2 can be repeatedly attached and detached.
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