The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert and environmentally sealed for reliable performance. With an operating temperature range from -65 °C to 200 °C, these connectors are suitable for a wide range of applications. Available in various mounting styles such as front wall mount, rear wall mount, and jam nut receptacles, they offer flexibility in installation. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells and offered in different plating options including cadmium-free finishes, they meet stringent requirements for military and industrial use. Suitable for potting applications, these connectors provide reliable performance in demanding environments.