MIL-DTL-38999 Series I connectors are high-performance, environmentally sealed connectors designed for harsh operating conditions. With up to 128 contacts housed in a rugged insert, these connectors ensure reliable signal transmission in extreme environments. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they offer versatile installation options. The connectors utilize M39029 rear release crimp contacts for secure connections, with contact sizes ranging from 22D to 8. Constructed with high-strength aluminum shells and available in various plating options, including cadmium and nickel, they guarantee durability and corrosion resistance. Suitable for military and aerospace applications, these connectors are RoHS compliant and offer a service rating of M, making them ideal for demanding environments.