Fuze A-670M

for 30×165 HEI and HET Rounds

for 2A42, 2A72 and 2A38 Automatic Guns

A-670M is a mechanical, nose, point-detonating fuze with delayed action. The fuze features distant arming and self-destruction.

Fuze A-670M completes 30 x 165 mm HEI and HET rounds for automatic guns 2A42, 2A38 and 2A72 mounted on the following carriers:
· Infantry Fighting Vehicles BMP-2, BMP-3, BMD-2, BMD-3, BTR-80A and their modifications
· Reconnaissance Vehicle “RIS”
· Air-Defence Complex “Tunguska”
· Attack Helicopters Ka-50 and Mi-28 and modifications

The fuze is safe in storage, handling and operation and ensures the safe and reliable function of the ammunition in all weather conditions.

FUZE SAFETY
Before firing the fire train is interrupted by the safety devices of the fuze. Even in case of unintentional ignition of the primer, no transfer of the firing pulse to the fire train can occur.

DISTANT ARMING
The fuze ensures distant arming within 20 to 100 m from muzzle. At firing the set-back and rotational forces arm the fuze, fixing the elements of the fire train in one line.

FUZE ACTION
Upon impact the fuze provides delayed action within 0.002 to 0.004 s.

SELF DESTRUCTION
In case of no impact the round is self-destruct within 9 to 14 s.

TECHNICAL SPECIFICATIONS

BASIC CHARACTERISTICS

BASIC CHARACTERISTICS:	– – –
Action:	Point-Detonating Delayed
Arming:	Distant by set-back and rotational forces
Muzzle Safety Distance:	Not less than 20 meters
Time of Delay:	0.002 to 0.004 seconds
Time of Self-Destruction:	9 to 14 seconds
Operational Temperature Range for firing:	-50 to +50°C
Operational Temperature Range for storing:	-50 to +50°C
Shelf Life:	15 years

TECHNICAL DATA

TECHNICAL DATA:	– – –
Length of Fuze (max):	69 mm
Visible Length (max):	39 mm
Intrusion Length (max):	30 mm
External Diameter (max):	20 mm
Weight of Fuze:	49 grams
Type of Booster:	A-30-T
Weight of Booster:	1 gramm
Thread Size:	Spec. M17.96×0.75-7h6h

PACKING

PACKING:	– – –
Number of Fuzes in one Case:	452 fuzes in 4 metal air-tight sealed box in a wooden case
Case Dimensions:	500x480x180 mm.
Case Gross Weight:	34 kg.
Case Volume:	0.044 cubic meters