MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts within an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, they offer durability in extreme conditions. These connectors come in various configurations like front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 crimp contacts for secure connections. The aluminum shells come with plating options such as cadmium and nickel, meeting diverse application needs. RoHS compliant finishes ensure environmental responsibility. Perfect for military and industrial use, these connectors guarantee reliable performance in harsh settings.