MIL-DTL-38999 Series I connectors, designated as MS27656, are high-performance electrical receptacles designed for back panel wall mounting applications in harsh environments. Featuring a durable aluminum shell with a choice of electroless nickel or cadmium olive drab finish, these connectors offer superior protection against environmental factors. With 18 removable crimp contacts, including 4 size 8Twinax and 14 size 22D contacts, they ensure reliable signal transmission in military and aerospace systems. The bayonet coupling mechanism guarantees secure mating, while gold-plated sockets enhance conductivity and signal integrity. Rated for operating temperatures ranging from -65 °C to 175 °C, and with a service rating of M and Twinax, these connectors are ideal for demanding applications that require rugged, high-reliability connectivity. Please note that this product is not RoHS compliant.