MIL-DTL-38999 Series I connectors, designed for harsh environments, feature up to 128 contacts in an insert with environmental sealing. Operating between -65°C and 200°C, these connectors offer 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 come with plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, including RoHS certified cadmium-free finishes. Perfect for military applications, these connectors ensure reliable performance in demanding conditions.