MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts encased in a durable insert. Designed for harsh environments, these connectors are environmentally sealed and capable of operating in extreme 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 cater to various installation needs. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for reliable connections. Constructed with high-strength aluminum shells, they come with a range of plating options, including cadmium-free finishes for RoHS compliance. Ideal for military and industrial applications, MIL-DTL-38999 Series I connectors ensure secure and efficient electrical connectivity in challenging conditions.