The MIL-DTL-38999 Series I connectors boast exceptional durability and performance in harsh environments, with up to 128 contacts housed in a sealed insert. Designed for rugged use, these connectors feature front and rear wall mount options, as well as jam nut receptacles with RFI grounding plugs. Offering versatility, they come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, they are available in different plating options, including cadmium-free finishes. Operating efficiently in temperatures ranging from -65 °C to 200 °C, these connectors ensure reliable connectivity in demanding applications.