# ThCT – Thread Cutting to Torque

Tools
ES STR SL ST SR QST STB IXB

The Thread Cutting to Torque function enables tightening where the Rundown torque required is greater than the Rundown complete torque, for example when tightening thin layers of metal using self-threading (or self-tapping) screws. The tool runs in forward direction until the Thread Cutting Angle (Aw) is reached. The thread cutting angle window is measured from when the torque passes Thread Cut Trigger Torque (Ttc) for the first time. From the point where Thread cutting angle is reached, the step continues to run until the Target Torque (Tt) is reached.

Parameter | Description
--- | ---
Target torque | Must be > 0.
Thread Cutting Angle Window | Default: 0. Must be > 0.
Trigger Torque | The angle measurement starts at this trigger.
Speed | Default: 60 rpm. Must be > 0.
Speed ramp type | Hard, soft, or manual. Default: Hard. If you select Manual, the Speed ramp field opens.
Brake (Valid only for Power Focus 6000 StepSync, Power Focus 8 StepSync, and Flex). | If On the tool will be stopped when the target is reached. If Off the program goes directly to the next step without stopping the tool.

Point and click on image to see more information:

A | Target Torque
B | Torque Trigger
C | Thread Cutting Angle Window