The MIL-DTL-38999 Series I connectors are designed for harsh environments, with up to 128 contacts sealed in an insert. Operating between -65 °C and 200 °C, they ensure reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, these connectors feature front and rear wall mount options, as well as jam nut receptacles. Utilizing M39029 rear release crimp contacts, they guarantee secure connections. With high strength aluminum shells and plating options including cadmium-free finishes, they meet stringent military specifications for durability and performance in demanding applications.