The MIL-DTL-38999 Series II connectors boast high-performance with up to 128 contacts housed in a durable insert, designed for harsh environments. Featuring a wide operating temperature range from -65 °C to 200 °C, these environmentally sealed connectors offer reliable performance in demanding conditions. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they ensure versatile installation. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, customization is effortless. Crafted from aluminum, with plating options such as electroless nickel and cadmium finishes, these connectors prioritize durability. Meeting stringent military specifications, they guarantee quality and compliance. Ideal for applications requiring rugged connectivity, the MIL-DTL-38999 Series II connectors are a trusted choice for aerospace, defense, and industrial sectors.