MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts housed in an insert for reliable connectivity. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, they feature bayonet coupling for secure connections. Constructed with aluminum shells and offering a choice of plating options, such as electroless nickel and cadmium finishes, they ensure durability and corrosion resistance. With M39029 rear release crimp contacts and gold plating, these connectors provide efficient signal transmission. Suitable for military and aerospace applications, they meet MIL-DTL-38999 II specifications and offer a service rating of Class I. The removable crimp contacts ensure easy installation and maintenance, with a mating life of 500 cycles. RoHS compliant options are available, making them ideal for environmentally conscious projects.