(Fig. 4)

This fuze, which may be identified by the stamping Hbgr.Z. 35 K on the body, is of the direct action and graze type with an optional delay of 0.10 secs. It is designed for use under a ballistic cap and is used in the 21 cm H.E. rocket and other projectiles with bal-listic caps.

The fuze mechanism is substantially the same in design and dimensions as the A.Z. 23 umg. 0.15 described in Pamphlet No. 12, except that a wooden hammer and closing disc are removed and the following arrangement substituted, to enable the fuze to be used under a ballistic cap.

The recess in the top of the setting head is screwthreaded to receive an adapter which screws on to a metal disc and is secured by a setscrew. The disc closes the bottom of the recess and supports the base end of a rod forming an extended hammer.

The hammer is a tube of light alloy with a solid extension piece, slightly less in diameter, attached at each end. The lower end of the hammer is housed in the fuze adapter whilst the upper end is held by another adapter in the nose of the ballistic cap and retained by a brass closing disc.

The fuze is normally set at non-delay for transport, and may be set for delay by the aid of a special fuze key.

The action of the fuze is the same at that described in Pamphlet No. 12 for the A.Z. 23 umg. 0.15, except that at direct action the ballistic cap is shattered and the hammer forces the needle on to the detonator.

Fig. 4