Description Panel mount receptacle has 4 gold-over-nickel socket contacts with turret termination, rating of 35 Amps per contact. Mil qualified to MIL-DTL-55181, these QPL connectors are used throughout military radio and intercom systems for ground, vehicle, airborne, and naval communications.  Designed with a center lock coupling screw that enables the mated connector to withstand high shock and vibrations.