MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. Available in various mount types including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. With 52 insert arrangements and M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, these connectors ensure secure and reliable connections. Constructed with aluminum shells and offering multiple plating options, such as electroless nickel and cadmium-free finishes, they meet stringent military specifications for performance and durability. Perfect for applications requiring environmental resistance, these connectors provide reliable connectivity in demanding conditions.