MIL-DTL-38999 Series II connectors are designed for harsh environments with up to 128 contacts in an insert, offering reliable connectivity in extreme conditions. These environmentally sealed connectors have an operating temperature range from -65 °C to 200 °C, making them suitable for a wide range of applications. Available in various mounting options such as front wall mount, rear wall mount, jam nut, and more, they provide flexibility in installation. With 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and featuring plating options like electroless nickel, they ensure durability and conductivity. Meeting military specification MIL-DTL-38999 II, these connectors are ideal for demanding environments where performance and reliability are critical.