Amphenol Industrial, MS Box Mount MIL Spec Circular Connector Receptacle, Pin Contacts,Shell Size 4, Bayonet,

The Amphenol MS-A connectors meet the latest performance requirements of MIL-DTL-5015. These connectors represent well-proven electrical capability at an acceptable cost for most equipment where durability is important. Class A applications include communications equipment, computers and shipboard installations where mechanical forces and physical parameters are not subject to extreme or rapid environmental changes.

Operating voltage to 3000 VAC (RMS) at sea level
305 contact arrangements from 1 to 104 circuits
Solder or crimp contacts, sizes 16-0 accepting 22-0 AWG