The MIL-DTL-38999 Series II connectors offer robust performance in harsh environments, with up to 128 contacts housed in an environmentally sealed insert. Designed for durability, they can operate in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options such as front wall, rear wall, jam nut, and box mount receptacles, these connectors are versatile for different applications. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. With a range of plating options including cadmium-free finishes, these connectors meet RoHS compliance standards. Suitable for military and industrial use, they provide reliable connectivity in demanding conditions.