The MS3112E18-32P is a miniature cylindrical box mounting receptacle connector designed for MIL-C-26482 Series 1 bayonet coupling applications with solder contacts. This shell size 18 connector features an environmental resisting (E-class) open wire seal configuration, providing protection against moisture and contaminants in demanding aerospace and military environments. The connector accommodates 32 solder contacts arranged in a specific insert pattern and includes dimensional specifications with a maximum length of 1.438 inches and contact diameter of 1.234 inches. The bayonet coupling mechanism ensures secure, quick-disconnect mating with corresponding plugs, while the box mounting design allows for panel or equipment integration. These connectors are widely used in avionics, military communications, and industrial control systems where reliable, sealed electrical connections are essential.