MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts in an insert and operating temperatures ranging from -65 °C to 200 °C. These connectors come in various configurations including front and rear wall mount, jam nut, and box mount receptacles. Available in aluminum shells with plating options such as cadmium and nickel, they offer reliable connectivity with RoHS compliant finishes. Featuring gold-plated removable crimp contacts, they ensure high conductivity and durability, making them ideal for military and industrial applications requiring environment-resistant solutions.