MS3114H20C16P is a hermetic jam nut receptacle miniature cylindrical connector manufactured by Amphenol Aerospace Operations, conforming to MIL-DTL-26482, Series 1 specifications. This connector features hermetically sealed construction with compression glass inserts and solder cup pin contacts with interfacial seal, designed for shell size 20. The connector utilizes bayonet coupling for secure mating and is available with optional strain relief and various plating finishes including electroless nickel, black zinc cobalt, and gray zinc nickel. It is widely used in instrumentation, monitoring equipment, communications, geophysical, industrial controls, robotics, oil and petrochemical industries, and military/aerospace applications where environmental resistance and hermetic sealing are critical requirements.