A triggering torque tool (10, 110, 310, 410) to tighten a screw or a similar fastener, which triggers at a target torque, comprising a) a main body (12, 112, 312, 412) with a housing (14, 114, 314, 414), which rotate around a common axis to transfer the torque, b) a drive shaft (18, 118, 218, 318), which is firmly connected to the housing (14, 114, 314, 414) to transfer a torque, c) a connection area (27, 127, 327) on the drive shaft (18, 118, 318) to connect to a drive, d) an adapter (30, 130, 330) for an operating tool, which is provided on the main body (12, 112, 312, 412) and rotates together with the housing (14, 114, 314, 414) and the drive shaft (18, 118, 318) to transfer the torque, e) measuring and evaluating means (74, 174, 374) to measure and evaluate the torque transferred, f) a trigger mechanism (44, 144, 344, 444), which is arranged in the housing (14, 114, 314, 414) and which triggers upon reaching a target torque, g) the adapter (30, 130, 330) for the operating tool, which is pivot-mounted in the housing (14, 114, 314, 414), whereby the trigger mechanism (44, 144, 344, 444) contains a locking mechanism (46, 146, 346, 446), which connects the adapter (30, 130, 330) to the housing (14, 114, 314, 414) to transfer the torque and unlocks when the trigger mechanism (44, 144, 344, 444) is released to allow said adapter to rotate freely in the housing (14, 114, 314, 414), h) the adapter (30, 130) having a radial hole (48, 148, 348, 418) with at least one a locking element (50, 150, 358,420), whereby the locking element (50, 150,358,420) is pushed out of the hole (48, 148, 348, 418) and into a recess (72, 172, 438) in the housing with the aid of the electrically operated actuator (62, 162, 364, 436) to lock and whereby the locking element (50, 150, 358, 420) moves in a free space (58, 168, 376) to unlock, characterized in that i) the free space is formed by an axial hole in the adapter, into which the locking element is moved by means of the electrically operated actuator with an axial pin to unlock the locking mechanism. a) a main body (12, 112, 312, 412) with a housing (14, 114, 314, 414), which rotate around a common axis to transfer the torque, b) a drive shaft (18, 118, 218, 318), which is firmly connected to the housing (14, 114, 314, 414) to transfer a torque, c) a connection area (27, 127, 327) on the drive shaft (18, 118, 318) to connect to a drive, d) an adapter (30, 130, 330) for an operating tool, which is provided on the main body (12, 112, 312, 412) and rotates together with the housing (14, 114, 314, 414) and the drive shaft (18, 118, 318) to transfer the torque, e) measuring and evaluating means (74, 174, 374) to measure and evaluate the torque transferred, f) a trigger mechanism (44, 144, 344, 444), which is arranged in the housing (14, 114, 314, 414) and which triggers upon reaching a target torque, g) the adapter (30, 130, 330) for the operating tool, which is pivot-mounted in the housing (14, 114, 314, 414), whereby the trigger mechanism (44, 144, 344, 444) contains a locking mechanism (46, 146, 346, 446), which connects the adapter (30, 130, 330) to the housing (14, 114, 314, 414) to transfer the torque and unlocks when the trigger mechanism (44, 144, 344, 444) is released to allow said adapter to rotate freely in the housing (14, 114, 314, 414), h) the adapter (30, 130) having a radial hole (48, 148, 348, 418) with at least one a locking element (50, 150, 358,420), whereby the locking element (50, 150,358,420) is pushed out of the hole (48, 148, 348, 418) and into a recess (72, 172, 438) in the housing with the aid of the electrically operated actuator (62, 162, 364, 436) to lock and whereby the locking element (50, 150, 358, 420) moves in a free space (58, 168, 376) to unlock, characterized in that i) the free space is formed by an axial hole in the adapter, into which the locking element is moved by means of the electrically operated actuator with an axial pin to unlock the locking mechanism.