Description
The M64A1 Fuze body is a single piece, die-cast from an aluminum-base alloy. The body is threaded externally and internally at the base; the external threads screw into the nose of the Mk 2 Projectile and the booster cup screws into the internal threads. A pellet of 112 grains of tetryl is contained in the booster.
The M64A1 Fuze differs from the M64 in the following respects:
The firing pin striker in the M64 is nail shaped. The M64A1 is a solid cylinder.
The firing pin of the M64 is hollowed out at the head to receive the end of the , striker. The firing pin of the M64A1 has a head that contacts the full diameter of the striker.
In the M64 Fuzes, the rotor housing is contained directly in the fuze body. The base is threaded for screwing into the fuze body. The rotor housing for the M64A1 Fuze is contained in a brass sleeve which fits into the fuze body and the base is not threaded. It is held in place by the booster which is screwed in behind it.
Functioning
No information about functioning.
See Also
Cartridge, 40mm HE-T, SD, Mk 2
Source(s)
TM 9-1904, Ammunition Inspection Guide (1944)
