MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for rugged applications with an operating temperature range of -65 °C to 200 °C. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. With options for straight, RFI grounding, and standard plugs, along with 52 insert arrangements utilizing M39029 rear release crimp contacts, these connectors ensure secure and reliable connections. Constructed with aluminum shells and offered in different plating options such as gold, electroless nickel, and cadmium finishes, they meet diverse environmental requirements. Perfect for military and industrial use, these connectors provide durability and performance in harsh conditions.