The MIL-DTL-38999 Series II connectors offer a reliable solution for harsh environments, featuring up to 128 contacts within a sealed insert. With an impressive operating temperature range of -65 °C to 200 °C, these connectors are suited for a variety of applications. Available in various mounting options such as front wall mount, rear wall mount, jam nut, and box mount receptacles, they provide flexibility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts in different sizes. Constructed with aluminum shells and offering plating options like cadmium and nickel, they ensure durability and corrosion resistance. Meeting MIL-DTL-38999 II military specifications, these connectors are designed for high performance in demanding scenarios, making them ideal for aerospace, defense, and other rugged applications.