Siemens Sinamics S120 Manual page 481

For installation, M6 screw bolts and hexagon nuts/grub screws ISO 7436-M6x40-14 H,
property class 8.8 are recommended.
The coolant connections are located on the lower side of the components. All connection
elements can be accessed using an appropriate tool.
● Thread type of water connections: Pipe thread ISO 228 G ½ B.
Booksize Power Units
Manual, (GH2), 04/2014, 6SL3097-4AC00-0BP6
Motor Modules Booksize
6.5 Motor Modules Liquid Cooled
481