MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing. Operating in temperatures ranging from -65°C to 200°C, they are suitable for demanding applications. This connector family includes front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, they offer a choice of plating options, including cadmium and nickel, with RoHS-certified finishes. Perfect for military and industrial use, these connectors ensure reliable performance in challenging conditions.