The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in a secure insert. These connectors are environmentally sealed, with an operating temperature range of -65°C to 200°C, making them ideal for a wide range of applications. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. Crafted from durable aluminum, they come in 9 shell sizes with 52 insert arrangements, ensuring compatibility with different setups. The use of M39029 rear release crimp contacts guarantees reliable connections. Plating options include cadmium and nickel finishes, with RoHS certified alternatives available. Perfect for military and industrial use, these connectors provide superior performance in demanding conditions.