MIL-DTL-38999 Series I connectors offer reliable connectivity 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 suitable for demanding applications. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. The high-strength aluminum shells come in different plating options, including cadmium-free finishes, ensuring durability and performance. Whether for military or industrial use, these connectors, with front wall mount, rear wall mount, and jam nut receptacles, provide secure and efficient electrical connections.