| CARTRIDGE CASE MATERIAL | BRASS |
| CARTRIDGE DESIGN TYPE | HIGH EXPLOSIVE ANTITANK |
| CARTRIDGE MODEL NUMBER | M66 |
| FUZE TYPE | BASE DETONATING |
| FUZE MODEL NUMBER | M62 OR |
| M62A1 |
| PROJECTILE FILLER TYPE | PENTOLITE |
| PROPELLANT CHARACTERISTIC MARKINGS | NOT REQUIRED |
| SUPPLEMENTARY CHARGE | NOT INCLUDED |
| PROXIMITY FUZE ADAPTABILITY | NOT ADAPTABLE |
| MUZZLE VELOCITY | 1000.0 FEET PER SECOND NOMINAL |
| WEAPON FOR WHICH DESIGNED | HOWITZER, CANNON M1A1 AND |
| HOWITZER, CANNON M3 |
| DOD AMMUNITION CODE | 1315-C029 |
| REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY UNIT PACKAGE QUANTITY,UNIT PACKAGE TYPE,AND PACKAGE MODEL NUMBER |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MILS10363 |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 19203 |
| DESIGN CONTROL REFERENCE | 75-1-141-2 |