This part of IEC 60512, when required by the detail specification, is used for testing connectors within the scope of technical committee 48. It may also be used for similar devices when specified in a detail specification. The object of this document is to detail a standard test method to assess the effectiveness of the coupling device to maintain engagement of mated connectors fitted with coupling and / or retaining devices when subject to specified forces applied to the cable/wire bundle or harness or applied directly to the connector body if so specified in a detail specification.