The MIL-DTL-38999 Series II connectors boast robust construction, with up to 128 contacts housed in a secure insert for reliable connectivity in harsh environments. Engineered for durability, these connectors are environmentally sealed and can operate within a wide temperature range, from -65 °C to 200 °C. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. Featuring straight, RFI grounding, and standard plugs with 90-degree cable clamps, these connectors come in 9 shell sizes and 52 insert arrangements, accommodating diverse needs. Utilizing M39029 rear release crimp contacts, they ensure efficient signal transmission. Crafted from aluminum with options for plating in cadmium-free finishes, such as electroless nickel and iridescent yellow cadmium, they meet stringent quality standards. Suitable for military and industrial use, these connectors provide reliable performance with a service rating of I and a mating life of 500 cycles, making them ideal for demanding environments.