MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts housed in an environmentally sealed insert. With an impressive operating temperature range from -65 °C to 200 °C, they offer reliable performance in extreme conditions. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, these connectors are versatile. The plugs come in straight, RFI grounding, and standard configurations, with 9 shell sizes and 52 insert arrangements to choose from. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Crafted from aluminum, these connectors offer durability and are available in different plating options, including cadmium-free finishes for RoHS compliance. Suited for military applications, the MIL-DTL-38999 Series II connectors provide exceptional conductivity and ingress protection, making them ideal for demanding environments.