The MIL-DTL-38999 Series I connectors are designed for harsh environments, with up to 128 contacts housed in an insert for secure connectivity. These connectors are environmentally sealed, ensuring reliable performance in extreme conditions with an operating temperature range from -65 °C to 200 °C. Featuring front wall mount, rear wall mount, and jam nut receptacles, they offer versatile installation options. Utilizing M39029 rear release crimp contacts in various sizes, including coax and twinax, they provide flexibility for different applications. Constructed with high strength aluminum shells and available in different plating options like electroless nickel and cadmium finishes, they offer durability and corrosion resistance. Meeting military specification MIL-DTL-38999 I, these connectors are ideal for aerospace, defense, and industrial applications requiring rugged and reliable connectivity.