MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in an insert. Designed for harsh environments, these connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different applications. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Crafted with aluminum shells and a range of plating options such as electroless nickel and anodized aluminum, these connectors ensure durability and reliability. With RoHS certified cadmium-free finishes, they meet environmental standards while offering superior performance in demanding settings. Perfect for military, aerospace, and other rugged applications, these connectors guarantee secure and efficient electrical connections in challenging conditions.