NBN EN 15566:2016

This standard specifies the requirements for the draw gear and screw coupling for the end of rolling stock that has to couple with other rolling stock (freight wagons, locomotives, passenger vehicles ...).
This standard covers the functionality, construction, interfaces and testing including pass/fail criteria for draw gear and screw coupling.
The standard describes three categories of classification of draw gear and screw coupling, (1 MN, 1,2 MN and 1,5 MN).
Permanent coupling systems are not in the scope of this standard.