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, 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 in multiple plating options, including cadmium-free finishes for RoHS compliance. Whether it's front wall mount, rear wall mount, or jam nut receptacles, these connectors ensure durability and conductivity, making them ideal for military and aerospace applications.