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Ordnance, Explosives, and Related Items

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PI, M90, M90A1 (T123)

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Description

Fuze M90A1 or M90 is a single-action, super quick point-initiating fuze designed for use with 57mm HEAT projectile.

The fuze has a diecast aluminum body with a neck extending forward to house a primer. A rotor with a lock and lock spring is mounted transversely in the fuze body, and carries a detonator. An auxiliary booster housing threaded into the base of the fuze body carries a booster charge. The base of the fuze body is threaded internally for assembly over the nose of the projectile, and the entire forward end with mechanical parts is covered with a thin steel ogive.

Functioning

No information about functioning.

Hazardous Components

No information about hazardous components.

See Also

Cartridge, 57mm HEAT, M307, M307A1

Source(s)

TM 43-0001-28, Artillery Ammunition (chg 11, 2003)

MIL-HDBK-146, Fuze Catalog (1982)

TM 43-0001-28, Artillery Ammunition, Guns, Howitzers, Mortars, Recoilless Rifles, Grenade Launchers, and Artillery Fuzes (1977)

TM 9-1300-203, Artillery Ammunition (1967)

TM 9-1385-51, Ammunition (Conventional) for Explosive Ordnance Disposal (1967)