MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. They come in various configurations, including front and rear wall mount, jam nut, and box mount receptacles. The plugs are available in straight, RFI grounding, and standard options with a 90-degree cable clamp. With 9 shell sizes and 52 insert arrangements, they offer versatility in application. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections. Made of aluminum, they come with plating options such as cadmium and nickel, catering to different environmental requirements. Suitable for military and industrial use, they guarantee reliability with RoHS compliant finishes.