CONSTRUCTION. The body is a cylindrical alloy casting, threaded internally at the nose to receive the fuze holder and fuze. The after body is tapered to receive the sheet me-tal, three-finned drum-shrouded tail assembly. The 1.3-kg and  1-kg bombs are identical except that the nose of the former is made of steel, while that of the latter is of light al-loy. (See fig. 51.)

REMARKS. There are three bombs to each set, as follows:

1. B1E and B1.3E: Fuze ignites an incendiary mixture.

2. B1EZA and B1.3EZA: Bomb is identical to 1, but a penthrite filled gaine, threaded into the tail, detonates thermally in about 5 minutes.

3. B1EZB and B1.3EZB: These are similar to paragraph 1 but a penthrite filled pocket in the nose detonates thermally after about 1/2 to 5 minutes.

SUSPENSION. These bombs are carried in a number of different sizes and types of con-tainer.

COLOR AND MARKINGS. The bomb is unpainted magnesium; the tail is dark green. The B1EZA and the B1.3EZA may have a red A stenciled on the nose and probably will have a Z stamped on the body near the tail. The B1EZB and the B1.3EZB may have a red B stenciled on the nose and a Z stamped on the body near the tail.

Figure 51 – 1-kg B1E, B1EZA, B1EZB Incendiary Bomb