MIL-DTL-38999 Series II connectors offer reliable performance in 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 are suitable for a wide range of applications. Available in various mount types including front wall, rear wall, jam nut, rear box, and front box, they provide flexibility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering multiple plating options, including RoHS certified finishes, they ensure durability and compliance with environmental standards. Ideal for military and industrial use, these connectors are designed for optimal performance in demanding conditions.