MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse application needs. The connectors, crafted from aluminum with options for plating finishes such as electroless nickel, ensure durability and corrosion resistance. Compliant with military specification MIL-DTL-38999 II, these circular plugs are suitable for demanding industrial and military settings, providing secure and efficient electrical connections.