MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature various mounting options such as front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. With a wide range of plating options including cadmium-free finishes, these connectors ensure reliable performance in extreme conditions. Operating between -65 °C and 200 °C, they are ideal for military and aerospace applications requiring durability and longevity.