The MS3112E16-8S is a box mounting receptacle from the Amphenol Miniature Cylindrical Connector series, designed for general duty and environmental applications. It features a shell size of 16 with an insert arrangement for 8 size 16 socket contacts. The connector utilizes a 5 key/keyway polarization system with a bayonet lock coupling for positive mating and is qualified to MIL-C-26482, Series 1. As a service class 'E' connector, it is an environmental resisting type supplied with a multi-holed grommet for moisture-proofing individual open wires. The aluminum shell has an olive drab cadmium finish, and the resilient neoprene insert ensures a reliable seal, making it suitable for military, aerospace, and industrial applications.