Tightening torques for plug connectors

Screw M8 connectors tight with a torque wrench. (e.g. ZB8801 from Beckhoff)
Torque: 0.4 Nm.

Screw B17 connectors tight by hand:
Plug the cable connector into the connector on the box to the stop. Turn the cap nuts of the cable connector clockwise by about 1/8 of a turn to the stop.