MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors are sealed for environmental protection and can operate in temperatures ranging from -65 °C to 200 °C. Available in various mounting options such as front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles, they offer versatility for different applications. With options for straight, RFI grounding, and standard plugs, along with a variety of shell sizes and insert arrangements, they provide flexibility in design. Constructed with aluminum shells and offering multiple plating options, including RoHS certified finishes, these connectors ensure reliable performance. Suitable for military and industrial use, they meet the stringent MIL-DTL-38999 II standards for durability and performance in demanding environments.