The MS3112E8-3P is a miniature cylindrical box-mounting receptacle connector designed for bayonet coupling in MIL-C-26482 Series 1 applications. It features an 8-pin shell size with solder cup contacts and environmental resisting open-wire sealing (Class E designation), providing moisture protection for individual open wires through a multi-hole grommet and clamping nut. The connector is tin-plated and rated for 5.0 amperes per #20 contact, with a dielectric withstanding voltage of 1500 volts (RMS) at 60 Hz for Service Rating I. It is designed for box-panel mounting with bayonet quick-disconnect coupling, making it suitable for aerospace, military, and industrial applications requiring reliable sealed connections in harsh environments.