Fuze B-37

for 37mm Anti-Aircraft Ammunition

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.

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.

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.

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

In case of no impact the round is self-destruct within 8 to 12 s


Action: Point-Detonating Fuze with Delayed Action
Arming: By set-back and rotational forces
Muzzle Safety Distance: Not less than 40 meters
Time of Delay: 0.002 to 0.004 seconds
Time of Self-Destruction: 8 to 12 seconds
Operational Temperature Range for firing: -40 to +50°C
Operational Temperature Range for storing: -40 to +50°C
Shelf Life: 15 years
Length of Fuze (max): 83.65 mm
Visible Length (max): 63.35 mm
Intrusion Length (max): 20.3 mm
External Diameter (max): 30 mm
Weight of Fuze:  169 grams
Type of Booster Pellet: Tetranitrol
Weight of Booster Pellet: 3.97 g.
Thread Size: Spec. 2M26.96×1.5f
PACKING: – – – 
Number of Fuzes in one Case: 144 fuzes in 4 air-tight sealed metal boxes in a wooden case
Case Dimensions: 520x500x170 mm.
Case Gross Weight: 40 kg.
Case Volume:  0.045 cubic meters