MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options such as front wall, rear wall, and box mount receptacles, they offer versatility in installation. Utilizing M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, these connectors ensure secure connectivity. With aluminum shells and plating options including electroless nickel and cadmium finishes, they meet stringent military specifications. The connectors, featuring bayonet coupling, provide reliable performance in demanding applications, making them ideal for use in aerospace, defense, and industrial sectors.