MIL-DTL-38999 Series II connectors, designed for harsh environments, feature up to 128 contacts in an insert and offer reliable performance in temperatures ranging from -65 °C to 200 °C. These connectors come in various configurations including front wall mount, rear wall mount, jam nut, and box mount receptacles. With options for straight, RFI grounding, and standard plugs, they cater to diverse connectivity needs. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for secure connections. Crafted from aluminum, they are offered with plating options such as electroless nickel and cadmium finishes, including RoHS certified cadmium-free variants. Perfect for military and industrial applications, these connectors ensure durability and conductivity in demanding settings.