MIL-spec wires have a long history and were initially developed to standardize wires and cables used in military equipment. Military standards like Mil-W-22759 have onerous testing and verification requirements to ensure wires perform correctly under arduous conditions. The M22759 standard transitioned to SAE AS22759 in 2004 and the original military standards were canceled. However, these two standards are identical, and it is common practice to refer to them as M22759 standards.