MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts housed in a durable insert. Designed for harsh environments, these connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options such as front wall mount, rear wall mount, and jam nut receptacles, they provide versatility for different applications. With 52 insert arrangements available, including M39029 rear release crimp contacts in multiple sizes, these connectors offer flexibility in design. Constructed with high-strength aluminum shells and offered in a range of plating options, including RoHS certified finishes, they ensure reliable performance in demanding conditions. Suitable for military and industrial use, MIL-DTL-38999 Series I connectors are essential for secure and efficient electrical connections.