The MS3106E10SL-3P is a 3-contact Circular Connector with hard silver-plated copper alloy contacts and olive drab chromate coating over cadmium plated aluminum alloy shell. The MIL-C-5015 series 045269-0004 cable mount straight plug features solder termination, endbell style with cable clamp and neoprene insulator and grommet. It has an O-ring under the coupling nut.