The MIL-DTL-38999 Series II connectors feature up to 128 contacts housed in an environmentally sealed insert, designed for operations in harsh environments with a wide temperature range from -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 connectivity solutions. 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, accommodating M39029 rear release crimp contacts in various sizes. Constructed with aluminum shells and offering plating options such as electroless nickel and cadmium finishes, they ensure durability and reliable performance. Meeting MIL-DTL-38999 II specifications, these connectors are ideal for demanding applications requiring secure and efficient electrical connections in critical environments.