| CENTER HOLE INSIDE DIAMETER | 3.685 INCHES MINIMUM AND 3.693 INCHES MAXIMUM |
| DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY SPECIAL FEATURES AND SPECIFIC USAGE DESIGN |
| FILE PROTECTION RING | INCLUDED |
| GROUNDING PROVISION | NOT INCLUDED |
| LENGTH | 2400.000 FEET MINIMUM AND 2450.000 FEET MAXIMUM |
| OVERALL DIAMETER | 10.470 INCHES MINIMUM AND 10.510 INCHES MAXIMUM |
| OVERALL WIDTH | 0.923 INCHES NOMINAL |
| MATERIAL | PLASTIC POLYETHYLENE TEREPHTHALATE |
| MINIMUM TENSILE STRENGTH | 7 POUNDS |
| SPECIFIC USAGE DESIGN | FOR USE AT 6250 BPI RECORDING DENSITY |
| SPECIAL FEATURES | SIGNAL DROP-OUT IS ANY 2 CONSECUTIVE BITS WHOSE READ BACK SIGNAL AMPLITUDE IS LESS THAN 40 PCT. OF THE STANDARD REFERENCE AMPLITUDE AT 1600 BPI; 9-TRACK,PHASE ENCODING; 2 PHOTOREFLECTIVE MARKERS 0.9-1.3 IN. L,0.17-0.21 IN. W,0.0008 IN. THK MAX; WRAPAROUND REEL BAND |
| WIDTH | 0.496 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |