MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in a sealed insert. Operating between -65 °C and 200 °C, these connectors come in various configurations such as front and rear wall mount, jam nut, and box mount receptacles. With options for straight, RFI grounding, and standard plugs, they accommodate different installation needs. Compliant with military specifications, these connectors utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Made of aluminum, they offer durability and reliability, with plating options including cadmium and nickel finishes. Ideal for aerospace, defense, and industrial applications, these connectors provide high performance in demanding conditions.