The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts housed in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse application needs. The connectors come in aluminum shells with options for plating finishes, ensuring durability and corrosion resistance. Compliant with military specification MIL-DTL-38999, this Series II connector is ideal for demanding aerospace and defense applications.