MIL-DTL-38999 Series II connectors boast up to 128 contacts housed in a robust insert, providing reliable connectivity in harsh environments. Engineered for durability, these connectors are environmentally sealed and operate seamlessly in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options including front wall, rear wall, jam nut, rear box, and front box (long grommet) receptacles, they cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, ensuring secure connections. Crafted from aluminum with multiple plating options such as electroless nickel and cadmium finishes, they offer versatility in application. With a mating type of bayonet and contact gender of male, these connectors guarantee efficient signal transmission. Designed for rugged use, they meet MIL-DTL-38999 II military specifications, embodying superior quality and performance in demanding scenarios.