MIL-DTL-38999 Series II connectors feature up to 128 environmentally sealed contacts, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options including front wall, rear wall, jam nut, and box mount receptacles, they offer versatility for different applications. These connectors, compliant with military specification MIL-DTL-38999 II, come in aluminum shells with multiple plating options such as gold, electroless nickel, and cadmium-free finishes, ensuring durability and performance. With 52 insert arrangements and M39029 rear release crimp contacts, they provide reliable connectivity for aerospace, defense, and industrial systems.