MS3122E12-8S is a miniature cylindrical box mounting receptacle connector designed for environmental applications with crimp-type contacts. It features a shell size 12 with 8 socket contacts arranged in a specific configuration, complying with MIL-DTL-26482, Series 1 specifications. The connector is supplied with open wire sealing (Class E) for moisture proofing individual wires and includes a multi-hole grommet and clamping nut. Key dimensional specifications include a maximum length of 1.375 inches, a contact diameter of 1.438 inches, and mounting hole diameter of 0.150 inches. This connector is widely used in instrumentation, monitoring equipment, machine tool automation, and factory automation applications where reliable environmental sealing and compact form factor are essential.