MIL-DTL-38999 Series I connectors offer high-performance connectivity in harsh environments, featuring up to 128 contacts housed within a rugged insert. Designed for durability, they are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, these connectors come in front wall mount, rear wall mount, and jam nut receptacle options, along with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure reliable connections with sizes 22D, 22M, 22, 20, 16, and 8, including coax and twinax variants. Constructed with high-strength aluminum shells, they offer multiple plating choices such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with RoHS-certified cadmium-free finishes available. Perfect for military and industrial applications requiring robust performance, these connectors, meeting MIL-DTL-38999 I specifications, guarantee secure and efficient connectivity in demanding environments.