Contact Start/Stop Storage Disk, 158361 Flux Transitions Per Track, 8.268 Inch Outer and 3.937 Inch Inner Diameters (formerly ANSI X3.119-1984(R1995))
InterNational Committee for Information Technology Standards (formerly NCITS)
/ 01-Jan-1984
Defines the physical and eletromagnetic characteristics of a disk in order to facilitate the manufacture, assembly, and use of disks that are interchangeable with one another.