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Japanese Bomb, 250 kg HE, Type 3 No. 25 Mk 31 Model 1

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1397-095

Description

Grey overall. Green tail struts. No color bands on nose.

The bomb consists of a nose piece, barrel, and tail assembly.

The nose of the bomb is blunt. A flat metal plate is fitted into the forward end of the barrel and welded there. The plate is drilled centrally and a gaine pocket is welded in the hole. A flange 3 7/8 inches long, 7/32 inch thick and of the same outer diameter as the barrel is welded to the forward end of the barrel. The flange is pierced by four 1/2 inch holes just aft of the forward end.

The barrel is of tubular steel construction.

The tail cone is held by 1 row of 18 plug welds and a continuous weld to a coupling ring which fits inside the barrel. The ring is held in the barrel by 2 rows of screws numbering 40 in all. There is a standard tail fuze pocket at the apex of the tail cone.

Four Navy type fins are spot welded to the tail cone. The fins are braced by a single set of box type struts.

Hazardous Components

Filler - Cast Type 98 explosive (175 lb, 79.5 kg)

See Also

General Information, Japanese Navy Bombs

Tail, B-3(a), Type 15 Model 2

Source(s)

TM 9-1985-4, Japanese Explosive Ordnance (Bombs, Bomb Fuzes, Land Mines, Grenades, Firing Devices and Sabotage Devices) (1953)

OP 1667, Japanese Explosive Ordnance, Volume 1 (1946)