MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts. The connector family includes front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs. Constructed with high-strength aluminum shells, they offer multiple plating options such as cadmium and nickel. RoHS certified finishes are also available. Perfect for military and industrial applications, these connectors ensure reliable performance with a mating life of 500 cycles and conductive contact styles.