MIL-DTL-38999 Series II connectors feature up to 128 contacts in environmentally sealed inserts, with an operating temperature range of -65 °C to 200 °C. Designed for harsh environments, these 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. Made of aluminum, they offer plating options such as cadmium and nickel. The straight plugs with a 90-degree cable clamp are ideal for military applications, meeting stringent standards for performance and durability.