A connector includes a shell having a mating end configured to be mated with a mating connector and that holds at least one contact. A coupling mechanism is rotatable about the shell. The coupling mechanism includes an inner coupling nut and an outer coupling nut separate from the inner coupling nut. The inner coupling nut has threads configured to be threadably coupled to a mating connector. The inner coupling nut has a track defined by track walls formed into an outer surface of the inner coupling nut. The outer coupling nut has a cavity receiving the inner coupling nut. The outer coupling nut has a post extending into the cavity and being received in the track. The post engages the track walls and is released from the track wall into the track when the connector is fully mated to the mating connector.