The MS3112E18-32S is a miniature cylindrical box mounting receptacle connector manufactured by Amphenol Industrial Operations, conforming to MIL-C-26482 Series 1 specifications. This connector features a shell size 18 with 32 contacts of size 20, utilizing solder contact termination and an open wire seal configuration. The receptacle is designed for box mounting applications with bayonet coupling, providing reliable electrical connections in compact form factors. Key dimensional specifications include a front view diameter of 1.062 inches and a side view length of 0.524 inches maximum, with a thread class 2A coupling mechanism. The connector is commonly used in aerospace, military, and industrial applications where miniaturized, high-density interconnections are required in space-constrained environments.