The 130775-0027-MS, also known as DCMM37SX, is a D*D Environmental series D-subminiature connector featuring 37 socket contacts in a size C shell. This connector is engineered for superior performance in harsh conditions, meeting the requirements of MIL-C-24308. It features a rugged aluminum shell with cadmium plating and a yellow chromate coating, along with a peripheral seal for moisture resistance. The gold-plated copper alloy contacts ensure reliable electrical connections, and it is suitable for applications in aircraft, missile systems, and ground support equipment.