STUD LOCKING TOOL

To provide a stud locking tool which can attach a stud bolt by a small insertion force, and can hold the stud bolt by a large holding force.SOLUTION: A stud locking tool 1 comprises a base part 11 and a locking part 12. The locking part 12 comprises: a pair of locking pieces 121, and a connecting band part 122 for connecting the pair of locking pieces 121, and drawing the pair of locking pieces 121 in an insertion direction D11 when being pressed to a tip part 221 of a screw portion 22 at the insertion of a stud bolt 2. The base part 11 comprises: a pair of guide parts 115 for guiding the pair of locking pieces 121 which are drawn by the connecting band part 122 in an oblique guide direction D14, and making them located at a grip position; and a pair of base-side lock parts 116 with which locking-side lock parts 121d of the pair of locking pieces 121 which arrive at the grip position are engaged.SELECTED DRAWING: Figure 5 【課題】スタッドボルトを低い挿入力で取り付けることができるとともに、スタッドボルトを高い保持力で保持することができるスタッド係止具を提供する。【解決手段】スタッド係止具１が、土台部１１と、係止部１２と、を備え、係止部１２が、一対の係止片１２１と、当該一対の係止片１２１を繋ぐとともに、スタッドボルト２の挿入時にネジ部分２２の先端部２２１に押されると一対の係止片１２１を挿入方向Ｄ１１に牽引する連結帯部１２２と、を備え、土台部１１が、連結帯部１２２によって牽引される一対の係止片１２１それぞれを斜めのガイド方向Ｄ１４にガイドして挟持位置に位置付ける一対のガイド部１１５と、挟持位置に達した一対の係止片１２１それぞれの係止側ロック部１２１ｄが係合する一対の土台側ロック部１１６と、を備えたことを特徴とする。【選択図】図５