MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. Operating between -65 °C and 200 °C, these connectors offer versatility in temperature extremes. Available in various mounting styles such as front wall, rear wall, jam nut, and box mount receptacles, they cater to diverse installation needs. With options for straight, RFI grounding, and standard plugs, along with a range of shell sizes and insert arrangements, these connectors provide flexibility in connectivity solutions. Crafted from durable aluminum with plating choices including cadmium and nickel finishes, they ensure reliable performance in demanding settings. RoHS compliant options are also available, making them suitable for environmentally conscious applications.