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, these connectors are reliable in extreme conditions. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. The connectors come in aluminum shells with plating options such as cadmium and nickel, ensuring durability. Utilizing M39029 rear release crimp contacts, they provide secure connections in sizes 22D, 22M, 22, 20, 16, and 12. Ideal for military and industrial use, these connectors meet stringent performance standards for conductivity and environmental resistance.