German Aufschlagzünder 13 AZ13 AZ8312 Impact Fuse

This fuse is off a B1E1 incendiary bomb. It’s coded DKP for Hagenuk Hanseatische Apparatenbauges, Neufeldt & Kuhnke GmbH at Berlin-Tempelhof. It is dated 1942.

This bomb consists of a cylindrical body made of an alloy of magnesium and aluminum with traces of silicon and is closed at its upper end by a screwed plug. One the shoulder of the bomb, three pegs, which also serve to lock the plug, and hold the tail. The base is closed by a plug that houses the percussion fuze AZ. 8312.

This fuze consists of a striker, an arming spring, and a detonator holder. The whole is sealed and held in position by a crimped washer. A safety pin keeps the needle clear of the detonator. The igniting arrangements consist of a detonator relay kept away from the plug by a washer and a cylinder with vents drilled in it. The whole is covered by a mixture that appears to be smoke-producing. The vents in the body of the bomb serve for the release of gases. These vents are normally closed by a strip of Chatterton’s compound.

The main filling is in two parts. The first of a small quantity, in contact with the detonator, serves as a relay. Its composition is not known. The main filling is an incendiary powder mixture of iron, aluminum, etc.

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