MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options, including front and rear wall mount, jam nut, and box mount receptacles, these connectors offer versatility in applications. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, they ensure reliable connectivity. Constructed with aluminum shells and offering different plating options, such as gold and electroless nickel, these connectors prioritize durability and performance. Meeting military specification MIL-DTL-38999 II, they are suitable for demanding industrial and aerospace environments.