The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in a sealed insert. With an operating temperature range of -65 °C to 200 °C, they offer reliable performance in extreme conditions. Available in various mounting styles, including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different applications. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections. Constructed with aluminum shells and plated with options like electroless nickel, they offer durability and corrosion resistance. With RoHS compliant finishes available, they meet environmental standards. Suitable for military and industrial use, these connectors are essential for reliable electrical connections in demanding environments.