MIL-DTL-38999 Series II connectors feature up to 128 contacts and are designed for harsh environments, with an operating temperature range of -65 °C to 200 °C. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. These connectors use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, ensuring secure connections. Made of aluminum with plating options such as electroless nickel and cadmium finishes, they meet RoHS compliance standards. Ideal for military and industrial use, these connectors provide reliable performance in demanding conditions.