MIL-DTL-38999 Series II connectors, designed for harsh environments, offer high-performance connectivity with up to 128 contacts in an insert. These receptacles, featuring various mounting options like front and rear wall mount, jam nut, and box mount, ensure secure installation. With an operating temperature range of -65 °C to 200 °C, they are suitable for demanding applications. 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, guaranteeing reliable connections. The aluminum shells come with different plating options, including cadmium-free finishes, meeting RoHS compliance. These connectors, known for their durability and performance, are ideal for military and aerospace applications, offering exceptional conductivity and environmental resistance.