MIL-DTL-38999 Series I connectors feature up to 128 contacts within a sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Offering front and rear wall mount options, as well as jam nut receptacles, this connector family ensures secure connections. With 9 shell sizes and 52 insert arrangements, it accommodates various needs and uses M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. The connectors boast high-strength aluminum shells with plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, including RoHS-compliant finishes. Perfect for military applications, they meet MIL-DTL-38999 I specifications, guaranteeing reliability in demanding environments.