MIL-DTL-38999 Series II connectors offer high performance in harsh environments with up to 128 contacts, featuring front and rear wall mount options, jam nut, and box mount receptacles. Operating between -65°C and 200°C, these connectors ensure reliability in extreme conditions. Available in 9 shell sizes and 52 insert arrangements, they utilize rear release crimp contacts in various sizes. Constructed with aluminum shells and offered with different plating options, including RoHS certified finishes, they guarantee durability and conductivity. Ideal for military and aerospace applications, these connectors provide secure and efficient electrical connections, meeting stringent performance standards.