MIL-DTL-38999 Series I connectors offer a robust solution for demanding environments, featuring up to 128 contacts within a sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors ensure reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts, including coax and twinax options. Constructed with high-strength aluminum shells and offering multiple plating choices, such as cadmium and nickel finishes, these connectors meet stringent military specifications. The connector family includes front and rear wall mount options, as well as jam nut receptacles, all designed for secure and efficient connectivity. RoHS-compliant versions with cadmium-free finishes are also available, making them suitable for a wide range of applications requiring durability and performance.