MIL-DTL-38999 Series II connectors are designed for 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 offer reliable performance in extreme conditions. Available in various mounting styles, including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different applications. The connectors come in aluminum shells with plating options such as cadmium and nickel, ensuring durability and corrosion resistance. Utilizing M39029 rear release crimp contacts, they offer secure connectivity with options for straight, RFI grounding, and standard plugs. Meeting MIL-DTL-38999 II military specifications, these connectors are ideal for demanding environments where ruggedness and performance are essential.