MIL-DTL-38999 Series II connectors feature up to 128 contacts housed in an insert, designed for rugged environments with an operating temperature range of -65 °C to 200 °C. These connectors come in various mounting options including front and rear wall mount, jam nut, and box mount configurations. 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 offered in different plating options such as cadmium and nickel, these connectors ensure reliable performance. The straight plugs with 90-degree cable clamps provide flexibility in installation. Suitable for military and industrial applications, they meet stringent quality standards for durability and conductivity.