MIL-DTL-38999 Series II connectors, designed for harsh environments, feature up to 128 contacts in an insert, with a wide operating temperature range of -65 °C to 200 °C. These environmentally sealed connectors come in various configurations including front and rear wall mount, jam nut, and box mount receptacles. Available in aluminum shells with multiple plating options, they offer reliable performance in demanding applications. Utilizing M39029 rear release crimp contacts, they ensure secure connections. RoHS compliant finishes add to their versatility, making them ideal for military and industrial use.