The MIL-DTL-38999 Series II connectors offer high-performance connectivity in harsh environments, featuring up to 128 contacts within a rugged insert. Designed for durability, they are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they ensure versatility in installation. These connectors, crafted from aluminum, come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts for reliable connections. With plating options such as electroless nickel and cadmium finishes, they meet diverse application requirements. The RoHS compliant models guarantee environmental sustainability, making them ideal for military and industrial use.