MIL-DTL-38999 Series II connectors are designed for rugged environments, offering up to 128 contacts in a single insert. With an operating temperature range from -65 °C to 200 °C, these connectors are ideal for use in harsh conditions. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for reliable connections. Crafted from aluminum, these connectors come in different plating options including cadmium and nickel for corrosion resistance. Meeting military specification MIL-DTL-38999 II, they ensure durability and performance in demanding applications.