Over-all length with gaine: 59/64 inch.

Threaded length: 1/4 inch.

Number of threads: 6.

Construction: This is an air-column fuze with the gaine enclosed in the fuze body. The fuze is of two-piece construction, with the upper part containing the air column and pri-mer and the lower part containing the gaine. The inclusion of the gaine in the fuze body leaves space for more explosive in the projectile.

Operation: There are no arming features in this fuze. On impact, the closing disk is crushed inward, compressing the air in the column and firing the gaine.

Figure 319 – Type 4 Super Detonation Fuze.