FASTENING TORQUE MANAGEMENT TOOL AND COMBINATION OF FASTENING TORQUE MANAGEMENT TOOL AND FASTENER

To provide a fastening torque management tool, in which a socket of an automatic or manual fastener is fitted to an outer peripheral surface of the fastening torque management tool, and a large fastening torque is applied to the fastening torque management tool to fasten the fastener, thus even if the outer peripheral surface of the fastening torque management tool is also plastically deformed, it is prevented that the outer peripheral surface of the fastening torque management tool sticks onto an inner peripheral surface of the socket.SOLUTION: A fastening torque management tool 2 is integrally formed of synthetic resin, and has an inner peripheral surface that defines a storage hole with a lower end surface opening and an outer peripheral surface 8 having a similar shape to a torque-apply regular polygonal outer peripheral surface of a fastener. The inner peripheral surface that defines the storage hole has a configuration that recesses are partially formed on each of the side surfaces of a regular polygonal inner peripheral surface corresponding to the torque-apply regular polygonal outer peripheral surface of the fastener. When the fastener is stored in the storage hole at least partially and a fastening torque is applied to the outer peripheral surface, if the fastening torque exceeds a threshold value, the inner peripheral surface of the storage hole is partially deformed so as to spin with respect to the fastener.SELECTED DRAWING: Figure 1 【課題】自動又は手動締付具のソケットを締付トルク管理具の外周面に嵌合させて締付トルク管理具に大きな締付トルクを加えて締結具を締め付け、それ故にトルク管理具の外周面も塑性変形しても、締付トルク管理具の外周面が締付具のソケットの内周面に齧り付くことが回避される締付トルク管理具を提供する。【解決手段】締付トルク管理具２は、合成樹脂から一体に形成されており、下端面が開放された収納穴を規定する内周面と締結具のトルク付加正多角形外周面の相似形状である外周面８とを有する。収納穴を規定する内周面は締結具のトルク付加正多角形外周面に対応した正多角形内周面の辺面の各々に部分的に凹部を形成した形態である。収納穴に少なくとも部分的に締結具を収納して外周面に締付トルクを加えた時に、締付トルクが閾値を超えると収納穴の内周面が部分的に変形されて締結具に対して空転するようになる。【選択図】図１