MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various configurations including front wall mount, rear wall mount, and jam nut receptacles, they offer RFI grounding plugs and use M39029 rear release crimp contacts. With options for different shell sizes and insert arrangements, these connectors boast high-strength aluminum shells and various plating choices such as cadmium and nickel. Meeting military specification MIL-DTL-38999 I, they are reliable for demanding applications, with RoHS certified finishes also available.