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. These connectors come in various configurations including front and rear wall mount, jam nut, and box mount receptacles, as well as straight and 90-degree cable clamp plugs. Compliant with military specification MIL-DTL-38999 II, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells and various plating options such as gold, electroless nickel, and cadmium-free finishes, they ensure reliable performance with 500 mating cycles. Perfect for applications requiring conductivity and environmental resistance, these connectors are suitable for demanding military and industrial use.