The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts within an insert for high-density connectivity. These connectors are rugged and environmentally sealed, ensuring reliable performance in extreme conditions with an operating temperature range of -65°C to 200°C. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The connectors come in aluminum shells with a choice of plating options such as cadmium and nickel for corrosion resistance. Meeting MIL-DTL-38999 II military specifications, they guarantee durability and performance, making them ideal for military, aerospace, and other demanding applications.