Description
Proximity Fuze M732 is designed for use on conventional, high explosive ammunition: specifically, 105mm, 155mm, 175mm, and 8 inch artillery ammunition, and 4.2 inch mortar ammunition, with a standard 2 inch thread. Action may be either proximity air burst or impact, Arming is initiated by setback and completed by the spinning of the projectile. Fuze M732 has the same intrusion (2.2 inches as standard point detonating and mechanical time fuzes, and unlike other proximity fuzes, it does not require a deep-intrusion shell cavity.
Fuze M732 has a plastic nose cone fitted to a movable steel ring which rotates on a steel sleeve, The movable ring has an index mark for setting time. The fuze is shipped with the index mark alined with the PD line on the sleeve. The sleeve also has graduations from 5 to 150 which represent seconds of flight time to target.
The M732A1 differs from the M732 in that it has an M724 type S&A device instead of an M125A1 type, a sliding S&A type impact backup system, and a large boaster pellet which can initiate cast TNT bursting charges. This type impact backup system provides proper function on rocket-assisted projectiles.
Functioning
No information about functioning.
Hazardous Components
No information about hazardous components.
See Also
Source(s)
Afghanistan Ordnance ID Guide, Volume 1 (2004)
TM 43-0001-28, Artillery Ammunition (chg 11, 2003)
MIL-HDBK-146, Fuze Catalog (1982)
