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 mounting options including front and rear wall mount, jam nut, and box mount receptacles, as well as straight and 90-degree cable clamp plugs. These connectors utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Crafted from aluminum, they offer plating options like electroless nickel and cadmium finishes, with RoHS certified cadmium-free variants. Ideal for military and aerospace applications, these connectors ensure reliable performance with 500 mating cycles and environmental resistance.