The invention relates to a tool with a housing (3) and a handle (2), a working part (5) which is connected to the housing (3) and serves for opening or closing a screw connection and a coupling which has an adjustment (12) and uncouples the working part (5) from the housing (3) when a working value that can be set by way of the adjustment (12) is reached and/or signals the reaching of the working value that can be set by way of the adjustment. Such a tool in which a correct adjustment of the torque value or tightening torque is retained with a high degree of certainty over a relatively long period of time is created by the adjustment having an adjusting screw with a tensioning system.
