The MS3112E12-10S is a box mounting receptacle from the MIL-C-26482 Series I family of miniature circular connectors. It is constructed with a size 12 shell and contains 10 socket contacts of size 20, arranged in the 12-10 pattern. This connector is designated as MS service class E, features solder termination for its fixed contacts, and is intermateable with other MIL-C-26482 compliant connectors. Designed for panel or box mounting, this receptacle is suitable for general-purpose industrial and military applications requiring a durable and reliable connection point.