MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing. Operating between -65 °C and 200 °C, they offer reliable performance in extreme conditions. Available in various configurations such as front and rear wall mount, jam nut, and box mount receptacles, these connectors meet stringent military specifications. With options for straight, RFI grounding, and standard plugs, they accommodate diverse connectivity needs. Utilizing M39029 rear release crimp contacts in multiple sizes, they ensure secure and efficient connections. Constructed with aluminum shells and offering plating choices including electroless nickel and cadmium finishes, these connectors provide durability and corrosion resistance. Suitable for applications requiring high reliability, they are ideal for military, aerospace, and industrial use.