MIL-DTL-38999 Series I connectors boast up to 128 contacts within a durable insert, designed for harsh environments with a wide operating temperature range of -65 °C to 200 °C. Featuring front and rear wall mount options, as well as jam nut receptacles, this connector family ensures secure connections. Utilizing M39029 rear release crimp contacts, they come in various sizes and insert arrangements, including coax and twinax. Constructed with high-strength aluminum shells, they offer multiple plating options like cadmium finishes and electroless nickel. RoHS certified versions are available, making them ideal for diverse applications requiring reliability and durability.