MIL-DTL-38999 Series I connectors offer superior performance in 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 are designed for reliability in extreme conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The high strength aluminum shells come in a range of plating options, including RoHS certified finishes, such as electroless nickel and cadmium olive drab. With options for front wall mount, rear wall mount, and jam nut receptacles, these connectors meet military specification MIL-DTL-38999 I standards, making them ideal for demanding applications requiring high-performance electrical connectivity.