Ordnance Factory Board

INSAS 5.56 MM BALL AMMN

Cartridge (INSAS) 5.56mm Ball Ammn is used in antipersonnel role by infantry and is fired from;
a) Semi-automatic INSAS Rifle
b) INSAS LMG

PHYSICAL CHARACTERISTICS :

(a)	CARTRIDGE
	Calibre	5.56 x 45 mm
	Mass	12.85 gm
	Length	60.00 mm
(b)	CASE
	Type	Rimless, Brass 70:30, Bottle Necked, Boxer
	Mass	6.7 gm
	Length	45.0 mm
(c)	BULLET
	Type	Guilding Metal envelope FMJ, Steel insert & lead core
	Mass	4.16 gm
	Length	24.5 mm
(d)	PROPELLANT
	Type	Ball Powder
	Mass	1.64 gm
(e)	PRIMER
	Type	Boxer
	Mass of Compo	0.025 gm

PERFORMANCE CHARACTERISTICS :

(a)	Pressure Average	335 Mpa (Max)
(b)	Mean Velocity from 558 mm Barrel at 25 m from muzzle	890 m/s.
(c)	Consistency (Mean Figure of Merit at 457 m)	16.5 cm or less
(d)	Extreme temperature performance	-53 to +52 deg C

SHELF LIFE :

The shelf life of Ammunition is 18 years .

PACKING :

20 Cartgs. are packed in one Carton and 40 such cartons in one H2A Box, hermetically sealed. One carrier size (6 A/L) contains 4 H2A boxes.
Box H2A size - 311 x 156 x 194 mm
Carrier 6 A/L size - 667 x 327 x 205 mm

HAZARD CLASSIFICATION

Compatibility group	S
Hazard Division	1.4
Fire fighting classification	4

Contact :

Marketing & Export Division
Ordnance Factory Board
Ayudh Bhawan
Government of India
Ministry of Defence
10A, S. K. Bose Road, Kolkata – 700 001, India.

Tel: 0091-33-2248 9027 / 2248 2103 / 2248 5077-80
Fax : 0091-33-2248 1748/2210 8235
Mail :ofbtrade@dataone.in
http://www.ofb.gov.in