MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert for secure connectivity. These circular plugs, available in aluminum shells, offer various mounting options such as front and rear wall mount, jam nut, and box mount receptacles. With operating temperatures ranging from -65 °C to 200 °C, they are suitable for a wide range of applications. The connectors, compliant with military specification MIL-DTL-38999 II, come with RoHS certified finishes and utilize M39029 rear release crimp contacts. Choose from a selection of plating options including gold, electroless nickel, and cadmium olive drab for reliable performance in demanding conditions.