MIL-DTL-38999 Series I connectors feature up to 128 contacts housed in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various configurations such as front wall mount, rear wall mount, and jam nut receptacles, they offer versatility for different applications. Utilizing M39029 rear release crimp contacts in multiple sizes, including coax and twinax options, these connectors ensure reliable connectivity. Constructed with high strength aluminum shells and offering a choice of plating options such as cadmium and nickel, they provide durability and corrosion resistance. With RoHS compliant finishes available, these connectors are suitable for a wide range of industrial and military applications.