MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in a sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are suitable for demanding applications. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. Available in aluminum shells with multiple plating options, such as cadmium and nickel, these connectors ensure reliable conductivity. Utilizing M39029 rear release crimp contacts, they offer secure connections in sizes 22D, 22M, 22, 20, 16, and 12. Meeting MIL-DTL-38999 II military specifications, these circular plugs are essential for aerospace, defense, and industrial systems where rugged performance is required.