Description
The nosepiece and body are constructed of one piece of machined tubular steel. The after end of the barrel is threaded internally to receive the tail assembly. The tail cone is welded to a collar which screws into the after end of the barrel.
Four tail fins are spot welded to the tail cone. They are braced by two sets of box-type struts. The tail fins are further strengthened by four steel plates welded to the outer edges and running the entire length from the after end to the curved portion of the fins. A round hole is cut in each plate to permit access to the tail fuze pocket.
Recent specimens of this bomb incorporate a steel reinforcing section in the after end of the body. This cylindrical section closed at one end by a perforated plate is strengthened by three strips of metal which divide it into six equal compartments. Twelve hexagonal bolts around the outer circumference of the bomb hold the section in place. TNT is cast into the section to a point flush with its after edges.
Hazardous Components
Paper wrapped cast picric blocks sealed with TNT (98 lbs, 44.55 kg)
See Also
General Information, Japanese Army Bombs
Nose, A-8(a), Type 4 Two Second Delay
Tail, B-8(a), Type 4 Five Second Delay
Source(s)
