| 摘要 |
PURPOSE:To increase the efficiency of the work to fasten an existing fixed body and a post-mounting member against each other by means of screws by a method wherein a non-visually observed nut on the existing fixed body side is easily positioned corresponding with a bolt on the after-mounted member side. CONSTITUTION:A nut 14 is held at an existing fixed body, such as a furring for ceiling A, in a temporarily locked state to be slidable but non-rotatable and meanwhile a bolt 23 corresponding to the nut is held at a post-mounting member, such as a ceiling panel B, in a temporarily locked state to be rotatable but non-slidable. The bolt and nut are positioned for coincidence with each other in a way that a guide wire 28 is removably inserted in the nut from the surface side of the post-mounting member after insertion of it through the bolt. Thereafter, the guide wire 28 is removed and the bolt is fastened against the nut. |
