MIL-DTL-38999 Series I connectors offer high-performance connectivity for demanding environments. With up to 128 contacts in each insert, these connectors are designed to be environmentally sealed and operate effectively in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options including front wall, rear wall, and jam nut receptacles, as well as RFI grounding plugs, they provide versatility for different applications. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, catering to diverse contact needs. Constructed with high-strength aluminum shells and offering multiple plating options like electroless nickel and anodized aluminum, they ensure durability and reliability. With RoHS certified cadmium-free finishes available, these connectors meet stringent environmental regulations, making them ideal for various industrial and military applications.