The MIL-DTL-38999 Series I connectors offer exceptional versatility with up to 128 contacts housed in a durable insert. Designed for harsh environments, these connectors are sealed to withstand extreme temperatures ranging from -65°C to 200°C. Featuring various mounting options, including front wall, rear wall, and jam nut receptacles, they ensure reliable connectivity in demanding applications. The connectors are available in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Constructed with high-strength aluminum shells, they come in a range of plating options, such as cadmium and nickel finishes, meeting diverse industrial needs. Trusted for their performance, these connectors are ideal for military and aerospace applications requiring rugged and secure electrical connections.