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British Bomb, 20 lb Frag, Mk 1, Mk 2, Mk 3, Mk 4

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1394-010

Description

This bomb has a streamlined, one-piece, cast-steel body, with the nose end open to take the exploder container. The rear end is reduced to form a spigot for taking the tail assembly. The boss on the spigot is tapped and threaded to receive the tail-securing rod. The exploder container is cemented in position, and locked by a locking screw.

A cylindrical strut is attached to the tail cone by four fins. The tail is secured to the body by a tail rod screwed into a boss on the body spigot, and passing through a threaded adapter on the narrow end of the tail cone. The locking nut and spring washer at both the outer and inner ends of the rod lock it in position.

The Small Bomb Container, 160 lb, contains eight of these bombs. The Small Bomb Container, 250 lb, will hold 12 of these bombs. These bombs are no longer being manufactured. However, they may be encountered in the field. They are being replaced by the 8 lb fragmentation bomb.

In the Mk IV Bomb the exploder system was changed to use only CE pellets, and a special retarder tail was incorporated.

Functioning

No information about functioning.

See Also

Bomb, 8 lb Frag, Mk 1, Mk 2

British Bombs - Construction

British Bombs - Designation and Classification

British Bombs - Fillings

Small Bomb Container, 160 lb

Small Bomb Container, 250 lb

Source(s)

British Bombs and Fuzes, Pyrotechnics, Detonators (1944)

OP 1665, British Explosive Ordnance (1946)