MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These environmentally sealed connectors have a wide operating temperature range from -65 °C to 200 °C. Offering various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse application needs. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, these connectors ensure reliable connectivity. Constructed with aluminum shells and available in different plating options including gold, electroless nickel, and cadmium-free finishes, they guarantee durability and performance. Suitable for military and industrial use, these connectors meet MIL-DTL-38999 II specifications for superior quality and reliability.