MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert with front wall mount, rear wall mount, and jam nut receptacles. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Made of high-strength aluminum, they come in 9 shell sizes and 52 insert arrangements, using M39029 rear release crimp contacts. Various plating options, including cadmium-free finishes, are available, such as electroless nickel and olive drab cadmium. Meeting military specification MIL-DTL-38999 I, these circular receptacles ensure reliable connectivity in demanding applications.
