The MIL-DTL-38999 Series II connectors are designed for harsh environments, offering reliable performance with up to 128 contacts in an insert. These environmentally sealed connectors feature a wide operating temperature range from -65 °C to 200 °C, making them suitable for various applications. Available in different mounting options including front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles, they ensure flexibility in installation. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors provide versatility in connectivity solutions. Made of aluminum, they come in various plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, catering to different needs. Meeting MIL-DTL-38999 II military specification, these connectors guarantee high performance in demanding conditions.