MS27656E17F35SD is a MIL-DTL-38999 Series I connector featuring a high-strength aluminum shell for robust performance in harsh environments. With 55 gold-plated removable crimp contacts (size 22D), this circular receptacle ensures reliable conductivity, rated for temperatures ranging from -65 °C to 200 °C. Its wall-mounting design, specifically for back panel installation, includes a bayonet coupling for secure mating. The electroless nickel finish provides added durability, while meeting military specifications for environmental resistance (Service Class E) and conductive conductivity. This connector, with a shell size of 17-35, is ideal for applications requiring high reliability and rugged construction, though it is not RoHS compliant.