MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing capabilities. Operating within a wide temperature range from -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse connectivity needs. With options for straight, RFI grounding, and standard plugs, as well as multiple shell sizes and insert arrangements, customization is key. Constructed with aluminum shells and offering plating choices such as electroless nickel and cadmium finishes, these connectors prioritize durability. Compliant with MIL-DTL-38999 II specifications, they ensure performance excellence in military and industrial applications.