MIL-DTL-38999 Series I connectors boast up to 128 contacts in an environmentally sealed insert, designed for extreme operating temperatures ranging from -65 °C to 200 °C. Available in various styles like front and rear wall mount, as well as jam nut receptacles, this connector family offers versatility for different applications. Featuring 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Crafted from high-strength aluminum, these connectors come in multiple plating options, including electroless nickel and RoHS certified cadmium-free finishes, catering to diverse industry needs. With a rugged construction and reliable performance, they are ideal for demanding environments that require secure and durable electrical connections.