MIL-DTL-38999 Series I connectors, designed for harsh environments, feature up to 128 contacts in an insert, offering versatile connectivity options. These connectors, with operating temperatures ranging from -65 °C to 200 °C, are environmentally sealed for reliability. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts, ensuring secure connections. The high-strength aluminum shells come in various plating options, including electroless nickel and cadmium finishes. With front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they cater to diverse installation needs. Designed to MIL-DTL-38999 I specifications, they meet stringent military standards, making them ideal for demanding applications requiring rugged and durable connectivity solutions.