| DOT IDENTIFICATION NUMBER | UN0321 |
| DOD AMMUNITION CODE | 1315-C660 |
| DOT REGISTRATION CODE | EX1988060364 |
| CARTRIDGE DESIGN TYPE | ANTIPERSONNEL-TRACER |
| CARTRIDGE MODEL NUMBER | M581 |
| FUZE DELAY TIME | 0.100 SECONDS NOMINAL |
| FUZE MODEL NUMBER | M592E1 |
| FUZE TYPE | MECHANICAL TIME |
| GROSS WEIGHT | 134.0 SHIPPING CONTAINER POUNDS AND 2512.0 PALLET POUNDS |
| HAZARDOUS MATERIAL CLASSIFICATION CODE | 1.2.1 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION AND E STORAGE COMPATIBILITY GROUP |
| MUZZLE VELOCITY | 1440.0 FEET PER SECOND NOMINAL |
| NET EXPLOSIVE WEIGHT | 8.064 STORAGE POUNDS AND 8.064 TRANSPORTATION POUNDS |
| PROJECTILE FILLER TYPE | STEEL FRAGMENTS |
| PROPELLANT CHARACTERISTIC MARKINGS | NOT REQUIRED |
| SPECIAL FEATURES | QTY UNIT PACK:1 & 1 & 2;PACKAGE HEIGHT:8.25 INCHES, PKG WIDTH:13 INCHES;PACKAGE UNIT TYPE:FIBER CONTAINER AND BARRIER BAG |
| WEAPON FOR WHICH DESIGNED | RECOILLESS RIFLE M40A1 |
| SUPPLEMENTARY CHARGE | NOT INCLUDED |