MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, with an operating temperature range of -65 °C to 200 °C. These harsh environment connectors come in various configurations, including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells and offering plating options such as cadmium and nickel, these connectors ensure reliability in demanding applications. With RoHS compliant finishes, they guarantee performance while meeting environmental standards. Perfect for military and industrial use, these connectors provide secure and efficient electrical connections in challenging environments.