MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range from -65 °C to 200 °C. Available in various mount types including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. With options for straight, RFI grounding, and standard plugs, these connectors come in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts, they ensure reliable connectivity. Made of aluminum with plating options such as cadmium and nickel, these connectors meet stringent military specifications for durability. Ideal for applications requiring rugged performance, they provide secure electrical connections in demanding environments.