B-37 Fuze for 37 mm Anti-Aircraft Ammunition by KINTEX

Companies & Organizations:


66 James Baucher blvd
1407 Sofia

B-37 is a mechanical, nose, point-detonating fuze with delayed action. The fuze features distance arming and self-destruciton.Fuze B-37 completes 37 mm HET round for 37 mm anti-aircraft guns Mod 1937 and Mod 1939. 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 Safety and Arm device prevents the detonator from positioning into the fire train. 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 is distant armed within 40  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 8 to 12 s.





144 fuzes in 4 air-tight sealed metalboxes packed in a wooden case  with dimensions:

520x500x170 mm

Gross weight:

40 kg


0.045 m3



Technical Characteristics:



Length of Fuze (max):

83.65 mm

Visible Length (max):

63.35 mm

Intrusion Length (max):

20.3 mm

External Diameter (max):

30.0 mm

Weight of Fuze:

169 g

Type of Booster Pellet:


Weight of Booster Pellet:

3.97 g

Thread Size:

Spec.  2M26.96 x 1.5f



PD; Delayed


distant, by set-back and rotational  forces

Muzzle Safety Distance:

not less than 40 m

Time of Delay:

0.002 to 0.004 s

Time of Self-Destruction:

8 to 12 s

Temperature Range for Firing:

-40 to +50°C

Temperature Range for Storage:

-40 to +50°C

Shelf Life:

15 years

Defense Products & Services: B-37 Fuze for 37 mm Anti-Aircraft Ammunition by KINTEX
Companies & Organizations: 
Defense Products & Services Sectors: Fuzes | Fuzing systems, ammunition
Country: Bulgaria
Description: B-37 Fuze for 37 mm Anti-Aircraft Ammunition
Source of Information: Kintex