MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors operate in a wide temperature range from -65°C to 200°C. Featuring various mounting options such as front wall mount, rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for reliable connections. Crafted from aluminum with plating options including cadmium and nickel, they ensure durability and corrosion resistance. With RoHS compliant finishes, they meet environmental standards while offering exceptional performance in military and industrial applications.