The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range of -65 °C to 200 °C, they offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, these connectors come with M39029 rear release crimp contacts for secure connections. Constructed with high strength aluminum shells and offered in different plating options, including cadmium-free finishes, they meet stringent military specifications for durability and performance. Suitable for front and rear wall mount as well as jam nut receptacles, these connectors ensure reliable connectivity in demanding applications.