MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts sealed within an insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Various mounting options, including front and rear wall mount, jam nut, and box mount receptacles, cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering plating options such as electroless nickel, these connectors ensure durability. RoHS certified finishes are also available, making them environmentally compliant. Suitable for military and industrial applications requiring rugged performance, MIL-DTL-38999 Series II connectors are the go-to solution for reliable electrical connections in demanding settings.