ANSI INCITS 82 : 1980 : R2001

1. Scope
2. Definitions
3. General Requirements
   3.1 Environment
   3.2 Materials
   3.3 Disk Cartridge Assembly
4. Physical Requirements
   4.1 Dimensions
   4.2 Torque
   4.3 Physical Properties of Disk
   4.4 Disk Coating
   4.5 Magnetic Coating Resistivity
   4.6 Flammability
   4.7 Toxicity
5. Data Track Requirements
   5.1 Track Geometry
   5.2 Track Locations
   5.3 Physical Track Identification
   5.4 Index
6. Standard Reference Surfaces
   6.1 General
   6.2 Primary Standard Amplitude Reference Surface(s)
   6.3 Secondary Standard Amplitude Reference Surface(s)
7. Magnetic Characteristics
   7.1 Data Surfaces
   7.2 Signal Quality
Appendixes
  Appendix A Optic System for Flexible Disk Light
             Transmittance Measurement
  Appendix B Drop-Through Gage
  Appendix C Experimental Procedure for Measurement of
             Thermal Expansion of Polyester Films
  Appendix D Experimental Procedure for Measurement of
             Hygroscopic Expansion of Polyester Films
  Appendix E Abrasivity Evaluation

Describes the general, physical, and magnetic requirements for interchangeability of the one-sided 5.25-inch (nominal) flexible disc cartridge - for use at 3979 bits per radian (BPR) - as required to achieve unformatted disk cartridge interchange among disk drives using 35 tracks (or up to 40 tracks) and associated information processing systems.