MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts within an insert for robust connectivity. These connectors are environmentally sealed and operate effectively in temperatures ranging from -65 °C to 200 °C. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. With options for straight, RFI grounding, and standard plugs, including a 90-degree cable clamp, they cater to diverse needs. The connectors utilize M39029 rear release crimp contacts in different sizes, ensuring reliable performance. Constructed with aluminum shells and offering plating choices like cadmium and nickel, they meet stringent quality standards. Suitable for military and industrial applications, these connectors provide secure and efficient electrical connections in demanding settings.