The MIL-DTL-38999 Series II connectors feature up to 128 environmentally sealed contacts, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting styles, 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 with a 90-degree cable clamp, these connectors come in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts, they ensure secure and reliable connections. Constructed with aluminum shells and offering plating options such as electroless nickel and cadmium finishes, these connectors meet stringent military specifications for durability and performance.