The MIL-DTL-38999 Series II connectors boast exceptional versatility with up to 128 contacts housed in a robust insert for secure connectivity in harsh environments. Designed for durability, these connectors are environmentally sealed and can operate flawlessly in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options including front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles, they offer flexibility for different installation needs. The plugs come in straight, RFI grounding, and standard configurations with a 90-degree cable clamp, ensuring easy and reliable connections. With 9 shell sizes and 52 insert arrangements available, these connectors accommodate diverse applications. Utilizing M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, they guarantee efficient and secure contact points. Constructed with aluminum shells and offered in multiple plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, these connectors prioritize both performance and corrosion resistance. Compliant with RoHS regulations, they also come in cadmium-free finishes, meeting environmental standards. Ideal for military and industrial applications, the MIL-DTL-38999 Series II connectors are trusted for their rugged construction, high conductivity, and reliable performance.