TM-9-2350-311-10

TM-9-2350-311-10 - Page 560 of 775

TM 9-2350-311-10

5-2 AUTHORIZED MUNITIONS — CONTINUED

5-2.2

Authorized Fuzes — Continued

e. M564 Mechanical Time and Superquick Fuze

The M564 fuze (6) is an improvement over the older MTSQ fuzes, in that it provides a longer timing mechanism (100

seconds) for functioning at longer ranges. The date of manufacture is stamped on the fuze body before the lot number.

Fuzes manufactured through 1969 must be set on 90 seconds if superquick (impact) action is desired. Setting of these

fuzes between S and 2 seconds may result in functioning after approximately 2 seconds. Fuzes manufactured since

1970 may be set as shipped on S for superquick (impact) functioning. Premature functioning of the fuze may occur

downrange if the fuze is fired in heavy precipitation; i.e., rainfall, sleet, snow, or hail.

f. M565 Mechanical Time Fuze

The M565 fuze (7) mechanical time (MT) fuze is similar to the M564 fuze (6) except that the M565 fuze does not contain

the point detonating assembly or the booster assembly. The M565 fuze can be set from 2 to 100 seconds. Like the

M564 fuze, the M565 fuze has a vernier scale to assure a setting accuracy of 0.1 seconds. The M565 fuze is used with

base-ejection projectiles only.

5-32