MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, as well as straight, RFI grounding, and standard plugs with a 90 degree cable clamp. These connectors utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, ensuring reliable connectivity. Constructed with aluminum shells and offered in different plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, they provide durability and versatility for a wide range of applications. The Series II connectors are MIL-DTL-38999 compliant and feature RoHS certified cadmium-free finishes, meeting stringent quality and environmental standards.