The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With environmental sealing and a wide operating temperature range from -65 °C to 200 °C, they offer reliable performance in demanding conditions. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse application needs. The connectors come in aluminum shells with multiple plating options, including cadmium-free finishes, ensuring compatibility with RoHS regulations. Utilizing M39029 rear release crimp contacts, they offer secure and efficient connectivity. Suitable for military and industrial use, these connectors are known for their durability and high performance standards.