The MIL-DTL-38999 Series I connectors offer high performance in harsh environments with up to 128 contacts enclosed in an insert. Designed for durability, they are environmentally sealed and capable of operating in temperatures ranging from -65°C to 200°C. Featuring various mounting options including front wall, rear wall, and jam nut receptacles, they ensure secure connections. Compliant with military specifications, these connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts in multiple sizes. Constructed with high strength aluminum shells, they are available with different plating options for corrosion resistance. These connectors, known for their reliability, are essential for applications requiring rugged and dependable connectivity.