The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With environmental sealing and a wide operating temperature range from -65 °C to 200 °C, they offer reliable performance in extreme conditions. Available in various mounting styles such as front wall mount, rear wall mount, jam nut, and more, these connectors provide versatility in installation. They come in aluminum shells with options for different plating finishes, including RoHS-certified cadmium-free choices. With M39029 rear release crimp contacts, they ensure secure connections in aerospace and military applications.