The MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts in an insert. These environmentally sealed connectors offer reliable performance in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they are versatile for different applications. Available in aluminum shells with plating options including electroless nickel and cadmium finishes, they meet stringent military specifications. With RoHS certified cadmium-free choices, they ensure compliance with environmental regulations. These connectors, with removable crimp contacts and bayonet coupling, are ideal for demanding aerospace and defense applications.