MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, with an impressive operating temperature range from -65 °C to 200 °C. These harsh environment thin-walled connectors, with various mounting options like front wall, rear wall, jam nut, and box mount receptacles, offer versatility for different applications. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in multiple sizes. With aluminum shells and plating options including cadmium-free finishes, they ensure reliable performance in demanding environments. These connectors, compliant with MIL-DTL-38999 II specifications, are ideal for military and industrial applications requiring rugged and durable connectivity.