MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed design, suitable for extreme operating temperatures ranging from -65 °C to 200 °C. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, these connectors ensure versatile installation. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering multiple plating options, including cadmium-free finishes, they meet stringent military specifications for reliable performance in harsh environments. With gold contact plating, removable crimp contacts, and bayonet coupling, they guarantee efficient signal transmission. RoHS compliant and with a service rating of Class I, these connectors are ideal for applications requiring durability and conductivity.