MIL-DTL-38999 Series I connectors offer high-performance connectivity in harsh environments, featuring up to 128 contacts within an environmentally sealed insert. Designed for durability, they operate reliably in temperatures ranging from -65°C to 200°C. This connector family includes front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs. With 9 shell sizes and 52 insert arrangements available, they accommodate various applications. Utilizing M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8 (coax and twinax), these connectors ensure secure connections. Constructed with high-strength aluminum shells and offered in a range of plating options, including cadmium-free finishes, they meet stringent performance standards. Ideal for military and industrial use, MIL-DTL-38999 Series I connectors provide reliable and durable electrical connections in demanding environments.