These bombs are produced for use with Hotchkiss Brandt mortars, of the following types:
MO-81-61 C Short barrel
MO-81-61 L Long barrel
The bomb is used against personnel and light material providing both fragmentation & blast effect.
TECHNICAL DATA (81 MM HE M 57 D A2)
Complete Round
Weight with fuze
3.2 kg
Length with fuze
382 mm
Projectile
Body Material
Forged Steel
Color
Olive drab or deep bronze green
Explosive charge
650 gm of TNT
Fuze
Detonating direct action type with optional delay of 0.05 sec
Other Components
Primary cartridge
Double base propellant GBPa 0.15x1x1 in rolled paper tubes weighing 8.2 gm. (Type Z 58C)
Augmenting charge
7 horseshoe charges containing double base propellant GB Pa 0.25x2.5x2.5 each weighing 10.5 gm.