MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts. The connectors come in high-strength aluminum shells with plating options such as cadmium and nickel. With RoHS-certified finishes, these connectors ensure reliable performance in demanding applications.