MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing. Operating within a wide temperature range of -65 °C to 200 °C, these connectors offer reliable performance in demanding conditions. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation requirements. With options for straight, RFI grounding, and standard plugs, as well as a range of shell sizes and insert arrangements, these connectors ensure flexibility in connectivity solutions. Constructed with aluminum shells and offering plating choices such as electroless nickel and cadmium finishes, they provide durability and corrosion resistance. Compliant with MIL-DTL-38999 II military specifications, these connectors are ideal for applications demanding rugged and secure electrical connections.