MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts sealed within an 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 utilize M39029 rear release crimp contacts for secure connections. The high strength aluminum shells come in different plating options, including cadmium-free finishes. Offering front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors are ideal for military and aerospace applications requiring rugged and durable connectivity solutions.