MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with operating temperatures ranging from -65 °C to 200 °C. Available in various mounting options including front and rear wall mount, jam nut, and box mount, these connectors offer versatility for different applications. The plugs come in straight, RFI grounding, and standard options with a 90-degree cable clamp, suitable for a wide range of setups. With 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, ensuring reliable connections. Constructed with aluminum shells and offering multiple plating choices, including cadmium-free finishes, they meet stringent military specifications for performance and durability. Perfect for use in demanding environments, these connectors provide secure and efficient electrical connections, with a service life of 500 cycles.