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, including front and rear wall mount, jam nut, and box mount receptacles, these connectors offer versatility in installation. With nine shell sizes and 52 insert arrangements, they accommodate M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, ensuring secure connections. Constructed with durable aluminum shells and offering multiple plating options, such as cadmium and nickel, they guarantee reliable performance. Meeting MIL-DTL-38999 II specifications, these connectors are ideal for military and industrial applications requiring rugged and high-performance connectivity in demanding environments.