The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts housed in an environmentally sealed insert. With a wide operating temperature range from -65°C to 200°C, these connectors offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts for secure connections. The high-strength aluminum shells come with a choice of plating options, including cadmium-free finishes for RoHS compliance. Whether used in front wall mount, rear wall mount, or jam nut receptacles, these connectors ensure durable and conductive connections, making them ideal for military and aerospace applications.