NOS Military Bendix 3 Pin Female Power Connector with Black Insulator, PT06W-12-3S. Fits a 5 Keyed insulator 5/8ā€ mating connector. Locking nut is 15/16ā€ Dia. Housing is 2ā€ Long. No Cable strain clamp. Donā€™t know what equipment it went to but will make a good connection