MIL-DTL-38999 Series I connectors are rugged and reliable, designed for harsh environments with up to 128 contacts sealed for protection. Operating seamlessly in temperatures ranging from -65°C to 200°C, these connectors come in various mounting options including front wall, rear wall, and jam nut receptacles, with RFI grounding plugs available. Featuring 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high-strength aluminum shells, they offer plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with RoHS certified cadmium-free finishes also available. These connectors are a part of the MIL-DTL-38999 I series, meeting stringent military specifications for performance and durability.