MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts within an insert. These connectors are environmentally sealed, with an operating temperature range of -65 °C to 200 °C. Available in various configurations including front and rear wall mounts, jam nut, and box mounts, they feature thin walls and restricted lengths for space-saving solutions. Offering superior durability, they are constructed with aluminum shells and come with a range of plating options including gold and electroless nickel. Compliant with military specification MIL-DTL-38999 II, these connectors are reliable for demanding applications.