The AN-M8 HC Smoke Grenade designated as the Army/Navy Model 8 HC Smoke Grenade (AN-M8 Smoke HC) is a US military grenade used as a ground-to-ground obscuring or screening device or a ground-to-air signaling or target-marking device.
Developed in the 1940s, using a sheet-steel cylinder body that can emit a dense cloud of white smoke that would last from 105 to 150 seconds.
The AN-M8 was used extensively by American or other allied forces throughout World War II to the 1990s. As of the September 2000 version of FM 3-23.30 Grenades and Pyrotechnic Signals, the AN/M8 was listed as obsolete.
It is used for smoke screening, target marking, and signalling, although the M18 colored smoke grenades are mainly used for the latter.
| Army/Navy Model 8 HC Smoke Grenade (AN-M8) | ||
|---|---|---|
| Color/Markings | light green body with black markings and a white top | |
| Body | Sheet steel cylinder | |
| Fuze assembly | M201A1 Pull-ring Igniter. A "mouse trap" type igniting fuze with a 1.2 to 2.0 second delay. Ignition ignites the filler and expels it from the grenade body | |
| Filler | 19 ounces of Type C, hexachloroethane (HC smoke) mixture | |
| Weight | ||
| Safety clip? | No | |
| Range | Can be thrown 30 feet by an average soldier before it ignites. It can be thrown further while igniting in flight | |
| Duration | The grenade emits a dense cloud of white or gray smoke that lasts for 105 to 150 seconds (1.75 to 2.5 minutes) | |
When employing the M18 or AN-M8 HC hand grenade, it may be desirable to use one of these grenades without the fuze. To do this, the following procedure should be used in combat only:
The HC smoke of the M8 is more toxic than that of the M18 grenade. The fumes comprise an acidic smoke of zinc chloride (ZnCl2), which produces hydrochloric acid on contact with water.