MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Available in various mounting options including front and rear wall mount, jam nut, and box mount, they offer versatility in installation. With options for straight, RFI grounding, and standard plugs, as well as a 90-degree cable clamp, these connectors cater to different connectivity needs. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 12. The connectors, made of aluminum, come with plating choices such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with some options being RoHS certified for cadmium-free finishes. A reliable choice for military and industrial applications, these MIL-DTL-38999 II connectors offer durability, performance, and compliance with stringent standards.