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