MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for extreme operating temperatures ranging from -65°C to 200°C. This harsh environment connector family includes front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, these connectors offer versatile plating options including cadmium-free finishes. Meeting stringent military specifications, they ensure reliable performance in demanding applications.