MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an insert. These environmentally sealed connectors are designed for harsh environments, operating seamlessly in temperatures ranging from -65 °C to 200 °C. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they provide versatile installation options. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts in various sizes. Constructed with high strength aluminum shells, they come with a choice of plating options, including cadmium-free finishes for RoHS compliance. Suitable for military and industrial applications, MIL-DTL-38999 Series I connectors ensure reliable performance in demanding conditions.