The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various mounting options such as front wall, rear wall, jam nut, and box mount receptacles, they ensure versatile installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating a wide range of applications. Utilizing M39029 rear release crimp contacts, they guarantee secure connectivity. Constructed with aluminum shells and offering multiple plating options including cadmium-free finishes, they provide durability and compliance with RoHS regulations. Suitable for military and industrial use, these connectors are ideal for demanding environments where reliable electrical connections are essential.