This part, the MS3476L20-39S L/C made by TE Connectivity, is a circular connector series with a "Tyco Style MS" double start thread. It is a coaxial connector that is made of environmentally friendly thermoplastic, with an operating temperature range from -55°C to +105°C. It has snap-on coupling, allowing for quick and easy mating, and improved IP67 water resistance in mated and unmated conditions for harsh environmental protection. The MS3476L20-39S L/C isIP67 rated up to fifteen psi of pressure wash capability, and is suitable for use in military, commercial, and industrial applications. It is part of a core set of 42 different single and multi-hole, push-pull and bayonet style connectors designed to meet MIL-DTL-38999, MIL-DTL-26482, and MIL-DTL-83723 specifications.