MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts within 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 jam nut, front and rear wall mount, and box mount receptacles, they provide versatility for different applications. The connectors come in aluminum shells with a choice of plating options, ensuring durability and corrosion resistance. Compliant with military specification MIL-DTL-38999 II, they are suitable for demanding military and aerospace environments.