MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These environmentally sealed connectors have a wide operating temperature range from -65 °C to 200 °C. Available in various mounting options, including front and rear wall mount, jam nut, and box mount receptacles, they offer flexibility for different applications. The connectors come in aluminum shells with options for plating, such as electroless nickel and cadmium finishes. Utilizing M39029 rear release crimp contacts, they ensure secure and reliable connections. With a focus on durability and performance, these connectors are ideal for military and aerospace applications.