MIL-DTL-38999 Series II connectors feature up to 128 contacts within an environmentally sealed insert, designed for rugged applications with an operating temperature range of -65 °C to 200 °C. Offering various mounting options including front and rear wall mount, jam nut, and box mount receptacles, these connectors ensure secure and reliable connections. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for easy installation. Constructed with aluminum shells and plating options such as electroless nickel and cadmium finishes, they meet stringent military specifications for durability. Suitable for harsh environments, these connectors guarantee optimal performance in demanding conditions.