MIL-DTL-38999 Series II connectors offer a rugged solution with up to 128 contacts in a sealed insert, designed for harsh environments. Featuring various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they ensure versatile installation. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for secure connections. With aluminum shells and plating options including cadmium-free finishes, they meet stringent RoHS regulations. Operating between -65 °C and 200 °C, they guarantee reliable performance in extreme conditions, making them ideal for military and industrial applications.