12-cm ordinary projectiles (semifixed).

12-cm ordinary projectiles (fixed).

12-cm incendiary, shrapnel projectiles (fixed).

12.7-cm ordinary projectiles (fixed).

12.7-cm incendiary, shrapnel projectiles (semifixed).

14-cm ordinary projectiles (bag).

15-cm ordinary projectiles (bag).

15.5-cm ordinary projectiles (bag).

20-cm ordinary projectiles (semifixed).

Construction: This brass fuze consists of a nose cap, fuze body, and base plug. The base plug threads into the fuze body, forming a seat for the arming-cap carrier and housing the setback plunger. The arming-cam carrier supports five arming cams, which, in turn, rest under the shoulder and supports the striker. The set-back plunger is held in the forward position by a steel sleeve crimped on the after end. The head of the plunger protrudes through and above the arming-cam carrier to prevent the moving out of a master detent which locks in position the remaining detents.

The striker is a machined piece fitting into a channel in the base plug, arming-cam car-rier, and fuze body. The upper end of the striker has a shoulder which rests on the arm-ing cams and is drilled longitudinally to receive the striker extension. The inner surface of the nose cap and the top of the striker extension are beveled so as to facilitate func-tioning on a low angle of impact. Theres is a groove for a ball locking devices located in the periphery of the threaded portion which threads into the projectile proper.

The gaine threads onto the after end of the base plug.

Operation: When the projectile is fired, the set-back plunger moves down into a recess in the base plug, thus freeing the arming cams, which move out from under the shoulders of the striker with centrifugal force. On impact, the nose cap is crushed, driving the stri-ker onto the primer.

Remarks: In the type 88 Mod 1 fuze there is a safetypin which fits into a groove at the base of the set-back plunger, securing the plunger in the forward position.

Figure 435 – Type 88 and Type 88 Modification 1 Nose Fuze.