Description
Brass, except steel spring and firing pin.
Fuze is screwed into tail of bomb and tightened with a spanner wrench.
The fuze body houses the arming vane assembly which is secured by a U-shaped wire. The firing pin is screwed into the striker spindle and is kept away from the primer by a spring. Six spanner holes are present, along with a hole for a shear wire. No shear wire is fitted. However, a locating pin prevents the striker spindle from rotating with the vanes. A sleeve permits the tail booster to be connected to the body. Stop studs are found on the vane cap and on the fuze body to prevent the vanes from being screwed down too tightly.
Functioning
On release from the plane, an arming wire is withdrawn from the holes in the vanes, allowing the latter to rotate and fall free. On impact, the firing pin is forced inward against the action of the spring to pierce the primer and set off the exploder system.
Hazardous Components
Primer, standard Japanese Army tail gaine and booster.
Physical Data
Length, overall (no booster) - 2.85 in (72.4 mm)
Width, overall - 1.55 in (39.4 mm)
See Also
Source(s)
OP 1667, Japanese Explosive Ordnance, Volume 1 (1946)
USNBD - Japanese Bombs & Fuzes (1944)
TM-E9-1984, Enemy Bombs and Fuzes, Section VII, Japanese Fuzes (1942)
