MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range of -65 °C to 200 °C. These harsh environment thin-walled connectors come in various configurations, including front and rear wall mount, jam nut, and box mount receptacles, as well as straight, RFI grounding, and standard plugs with a 90-degree cable clamp. With 9 shell sizes and 52 insert arrangements available, they utilize M39029 rear release crimp contacts in multiple sizes. Constructed with aluminum shells and offered in different plating options such as electroless nickel and cadmium finishes, including RoHS-certified cadmium-free options, these connectors meet military specification MIL-DTL-38999 II standards. The MS27484 connectors, known for their reliability, are designed for applications requiring high-performance connectivity in demanding environments.