MIL-DTL-38999 Series II connectors are rugged and reliable, designed for harsh environments with up to 128 contacts in an insert. These environmentally sealed connectors offer a wide operating temperature range from -65 °C to 200 °C. Available in various mounting styles, including front and rear wall mount, jam nut, and box mount receptacles, they feature durable aluminum shells with plating options such as electroless nickel and iridescent yellow cadmium. With RoHS compliant finishes, these connectors ensure optimal performance in military and industrial applications.