The MIL-DTL-38999 Series I connectors boast up to 128 contacts housed within an environmentally sealed insert, designed for extreme operating conditions ranging from -65°C to 200°C. Featuring front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs, this connector family offers versatile connectivity solutions. With 9 shell sizes and 52 insert arrangements available, they utilize M39029 rear release crimp contacts in various sizes, including coaxial and twinax. Constructed with high-strength aluminum shells, these connectors come with a choice of plating options, such as cadmium-free finishes. Meeting stringent military specifications, they ensure reliable performance in harsh environments.