The MS3102E22-22P is a 4-position military standard Box Mounting Receptacle with pin type silver-plated copper contacts and 22-22 insert arrangement. Shell components are fabricated from high grade aluminum alloy. The standard hardware plating is electrically conductive cadmium-plated finish with an olive drab chromate after-treatment for corrosion resistance. Resilient neoprene inserts provide an outstanding moisture barrier, high dielectric strength and resistance to vibration. This connector represents well-proven electrical capability at an acceptable cost for most equipment where durability is important. The MIL-C-5015 series circular connector features threaded coupling, single key and keyway polarization representing maximum simplicity in design. This connector is recommended for conditions where vibration, moisture, pressure and temperature are extreme.