NBN EN 15566+A1:2010

This standard specifies the requirement of the draw gear and screw coupling for the end rolling stock which have to couple with other interoperable rolling stock (freight wagons, locomotives, passenger vehicles ...).
This standard covers the functionality construction, interfaces, 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).