MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts sealed within their inserts. Operating in temperatures ranging from -65 °C to 200 °C, these connectors offer durability and reliability. Available in various mount types, including front wall and rear wall mounts, they feature bayonet coupling for secure connections. With options for straight, RFI grounding, and standard plugs, as well as multiple shell sizes and insert arrangements, these connectors provide flexibility for different applications. Made of aluminum with plating options such as electroless nickel and cadmium finishes, they ensure robust performance. RoHS-certified cadmium-free variants are also available, meeting environmental standards. Suitable for military and industrial use, these connectors are essential for demanding applications.