MIL-DTL-38999 Series II connectors boast up to 128 contacts within a sealed insert, designed for extreme environments with a wide operating temperature range of -65 °C to 200 °C. These connectors, in various configurations like front and rear wall mount, jam nut, and box mount, offer versatility for different applications. Featuring 52 insert arrangements and utilizing M39029 rear release crimp contacts, they ensure reliable connectivity. With options for RoHS compliant finishes, including cadmium-free plating, they meet stringent environmental standards. Perfect for military and aerospace use, these connectors, with their durable aluminum shells and gold contact plating, guarantee long-lasting performance in demanding conditions.