| 摘要 |
PROBLEM TO BE SOLVED: To prevent co-rotation of a joint nut with a flange when taking out after curing concrete, and to prevent jumping-out of a flange part of the joint nut with flange and a sleeve with a flange from a concrete wall surface even when excessively fastening a form holding tool.SOLUTION: A shaft leg 11 with a flange comprises a shaft part 11a for forming male screw parts 11a1 and 11a2 and a shaft leg flange part 11b, and a sleeve 13 with a flange comprises a sleeve part 131 and a disk-like flange part 132, and comprises a recessed part 132a for fitting the shaft leg flange part 11b of the shaft leg 11 with the flange to the reverse side of its disk-like flange part 132 and an annular ring-shaped projection part 132b on the outside of its recessed part 132a. A joint nut 12 with a flange is constituted of a hexagonal nut part 121 and a disk-like form side flange part 122, and an outside surface of the annular ring-shaped projection part 132b does not jump out to the outside from an outside surface of the joint nut 12 with the flange. |
