MIL-DTL-38999 Series II connectors are designed for harsh environments with up to 128 contacts sealed in an insert. Operating between -65 °C and 200 °C, these connectors come in various configurations including front and rear wall mount, jam nut, and box mount receptacles. Offering versatility, they feature straight, RFI grounding, and standard plugs with a 90-degree cable clamp. With 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in various sizes. Made of aluminum, these connectors come with multiple plating options such as cadmium and nickel, catering to different requirements. Meeting MIL-DTL-38999 II specifications, they ensure reliable performance in demanding applications.