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 such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. The connectors come in aluminum shells with plating options including cadmium and nickel, ensuring durability and corrosion resistance. Meeting military specification MIL-DTL-38999 II, they provide secure and efficient electrical connections for critical applications.