
This cartridge is used to produce smoke for screening and spotting.
Projectile M64 is assembled loose to a cartridge case of the M5 series and uses the same propelling charge and primers as high explosive cartridge M48. The projectile body, a steel casing with a boattailed base, contains 1.34 pounds of white phosphorus (WP). The projectile body is internally threaded at the nose to receive a steel adapter which accommodates the fuze and press-fitted burster casing M6. A burster, which consists of tetryl pellets loaded under pressure in an aluminum-alloy tube, is retained in the burster casing by a burster initiator. The burster initiator contains a tetryl pellet (weighing approximately 33 grains) and an M17 detonator. It is held in position by a snap ring which secures it to the steel adapter.
Filler - WP (1.34 lb, 0.6 kg)
Cartridge case - M5A1, M5A1B1, M18, M18B1
Primer - M1, M1A1, M1A2, M1B1A2, M31B2, M64
Propelling charge - M1 (1.06 lb, 0.48 kg), or M1 (2 lb, 0.9 kg)
Burster Initiator - M1
Burster - M8 (1.02 oz, 0.03 kg)
Detonator - M17
Projectile, 75mm Chemical, M64
TM 9-1300-203, Artillery Ammunition (1967)