BECKHOFF EP2xxx - Manual (Page 77)

Mounting and cabling
3.1.3 Nut torque for connectors
M8 connectors
It is recommended to pull the M8 connectors tight with a nut torque of 0.4 Nm.
Fig. 59: EtherCAT Box with M8 connectors
M12 connectors
It is recommended to pull the M12 connectors tight with a nut torque of 0.6 Nm.
Fig. 60: EtherCAT Box with M8 and M12 connectors
7/8" connectors
It is recommended to pull the 7/8" connectors tight with a nut torque of 1.5 Nm.
EP2xxx 77 Version 2.1.0