MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in a sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. The connectors, compliant with military specification MIL-DTL-38999 II, boast durability with aluminum shells and come in different plating options including cadmium-free finishes. They utilize M39029 rear release crimp contacts and are suitable for applications requiring high performance and environmental resistance.