MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These circular connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. With various mounting options including front wall mount, rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. Available in aluminum shells with multiple plating options, such as electroless nickel and cadmium finishes, these connectors ensure durability and reliability. The removable crimp contacts, compatible with sizes 22D, 22M, 22, 20, 16, and 12, provide flexibility in connectivity. Meeting MIL-DTL-38999 II military specifications, they guarantee high performance in demanding applications.