MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65°C to 200°C, they offer durability and reliability in extreme conditions. Available in various shell sizes and insert arrangements, these connectors utilize M39029 rear release crimp contacts, including sizes 22D, 22M, 22, 20, 16, and 8. The high-strength aluminum shells come with a choice of plating options, such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with RoHS certified cadmium-free finishes available. The MIL-DTL-38999 I family includes front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, ensuring versatile connectivity solutions in military and industrial applications.