MIL-DTL-38999 Series I connectors offer high-performance connectivity in harsh environments, featuring up to 128 contacts within an environmentally sealed insert. Operating flawlessly in temperatures ranging from -65°C to 200°C, these connectors are essential for mission-critical applications. With options for front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they provide versatile solutions for various setups. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for reliable connectivity. Constructed with high strength aluminum shells and offering a range of plating options including electroless nickel, these connectors ensure durability and performance. Meeting stringent military specifications, they are ideal for use in defense, aerospace, and other demanding industries.