MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts within an environmentally sealed insert. With an operating temperature range from -65°C to 200°C, these connectors ensure reliable performance in extreme conditions. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different applications. Available in aluminum shells with a range of plating options, such as cadmium-free finishes, these connectors meet RoHS compliance standards. Utilizing M39029 rear release crimp contacts, they offer secure and efficient connectivity. Ideal for military and aerospace applications, these connectors are built to withstand rugged environments and offer a high mating cycle life of 500 cycles. With a focus on durability and performance, they are suitable for demanding industrial and defense applications.