OFAB 250-270 High Explosive Fragmentation Bomb

NSN: 1325

OFAB 250 – 270 High Explosive Fragmentation Bomb  is intended for destruction of military field facilities and base stations, destruction of personnel in open terrain as well as in light armored vehicles and trucks on the march or during attack within the main concentration perimeter.

Technical data:

Caliber, kg	250
Length without fuze, mm	1446
Weight of bomb without fuze, kg	268
Bomb diameter, mm	Ø 325
Stabilizer fin span, mm	410
Distance between CG and bomb front section, mm	545
Characteristic time, s	20,92/12
Explosive Weight of explosive, kg	ТNТ 94
Suspension	Two-point suspension or single on the opposite
Release height, m	500…12 000
Shock wave radius, m
–  manpower and soft-skinned vehicles	up to 150
–  light armored vehicles	up to 40
Fuze	AVU-ETM, AVU-ET
Packing:
Wooden crate:
Overall dimensions, mm	1803 х Ø590
Volume, m3	0,49
Gross weight, kg	335
FUZE AVU-ETM
Weight, kg	1,92
Height, mm	210
Connecting thread diameter, mm	Ø52
Detonator weight, g	60
Fuze actuation time according to mode, s	Mode М – super quick Mode МЗ – 0,01…0,04 Mode СЗ – 0,06…0,09
	Attack mode – 10…14,5
Fuze arming delay setting, s	Attack mode – 1,4…2,4 Mode П – 3,5…5,5
	Mode М or МЗ or СЗ  – 10…13,5
Fuze arming time, s	1,4…13,5
Packing:
–  4 fuzes packed in an airtight metal box.
–  4 metal boxes packed in one wooden box.
Wooden box overall dimensions, mm	644 х 610 х 175
Volume, m3	0,07
Gross weight, kg	52