The MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an insert. Designed for harsh environments, they are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, this connector family provides versatility. With 9 shell sizes and 52 insert arrangements available, they use M39029 rear release crimp contacts in various sizes. Constructed from high-strength aluminum, these connectors come with a choice of plating options, including cadmium-free finishes. Meeting military specification MIL-DTL-38999 I, they ensure reliable performance in demanding applications.