MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With 9 shell sizes and 52 insert arrangements available, they accommodate various contact types, including M39029 rear release crimp contacts. Constructed with durable high-strength aluminum shells, they come in a range of plating options, from cadmium to electroless nickel, ensuring reliable performance in demanding conditions. Meeting MIL-DTL-38999 I specifications, these connectors are ideal for military and aerospace applications requiring rugged and secure electrical connections.