NEMA 14 Stepper Motor

willduino:
I looked up what this meant and I understand that it is the amount of torque it can withstand if magnetised but not turning. However does this value also equate to the torque that it can drive?

No, its fairly irrelevant really. You find the torque-speed graphs in the datasheet (there should be
several for different supply voltages), and look up the dynamic torque for the speed/voltage you are
interested in. Torque drops rapidly with increasing motor speed, and more rapidly with lower
supply voltages. Constant current drive is assumed in all this.

Holding torque is always much larger than dynamic torque, this is why you can reduce the current by a factor of
2 or more when the motor is stationary to save power.