Information technology - Data interchange on 130 mm (5,25 in) flexible disk cartridges using modified frequency modulation recording at 7958 ftprad, 1,9 tpmm .........(abbreviated)
This part of ISO/IEC 7487 specifies the dimensional, physical and magnetic characteristics of the cartridge so as to provide physical interchangeability between data processing systems.
ICS
35.220.21 Magnetic. Including flexible disks, diskettes, disk packs, disk cartridges, etc. / Магнитные диски. Включая гибкие магнитные диски, дискеты, дисковые пакеты, дисковые картриджи и т.д.