The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert that is environmentally sealed for reliable performance. With an operating temperature range from -65 °C to 200 °C, these connectors are suitable for a wide range of applications. Available in various shell sizes and insert arrangements, they use M39029 rear release crimp contacts for secure connections. The connectors come in high-strength aluminum shells with plating options including cadmium and nickel finishes. Offering RoHS certified cadmium-free options, they meet stringent environmental standards. Suitable for military and industrial use, these connectors provide durability and conductivity in demanding conditions.