MS3102E18-10P is a circular military-standard connector conforming to MIL-C-5015 specifications, designed as a box mounting receptacle with threaded coupling. It features 4 contacts of size 12 with hard silver plating, solder cup contact type, and a contact rating of 41 A at +20°C. The connector is constructed from aluminum alloy shell with olive drab chromate coating over cadmium plating, neoprene insulator and grommet material, and copper alloy contacts, providing robust performance in demanding environments. With an operating temperature range of -55°C to +125°C, test voltage of 1600 Vrms, and 500-hour salt spray resistance, this connector is ideal for military, aerospace, and industrial applications requiring reliable high-current connections in harsh conditions.