MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts in a sealed insert. With a wide operating temperature range of -65 °C to 200 °C, they offer reliable performance in harsh conditions. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, these connectors provide flexibility for different applications. The aluminum shells come with a choice of plating options, including electroless nickel, ensuring durability and corrosion resistance. Meeting military specification MIL-DTL-38999 II, these circular plugs with removable crimp contacts are ideal for demanding aerospace and defense applications.