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 shell sizes and insert arrangements, they offer front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs. Constructed with high strength aluminum shells, they come in RoHS certified cadmium-free finishes, including options like light iridescent yellow cadmium and olive drab cadmium. Utilizing M39029 rear release crimp contacts, these connectors ensure reliable connectivity, making them ideal for military and aerospace applications.