
The bomb body is a steel cylinder having a hexagonal nose plug. The fuze is installed in the tail plug assembly. There are three vent holes below the primer cap assembly, to assist in initial burning. There is a hexagonal hollow sheet-metal tail.
AN-M54X is the same as AN-M54, except that next to the hexagonal nose plug a small portion of the thermate charge is replaced by a steel capsule containing 170 grains of black powder, which explodes and scatters the molten iron after the bomb has burned about one minute.
AN-M54XA1 is the same as the AN-M54, except that inside the hexagonal nose plug there is a steel cylinder containing a tetryl high explosive charge with a delay fuse and a detonator. A thin spacer of magnesium is between the thermate and the fuse opening of the explosive cylinder. After one minute of burning, the fuse is ignited, exploding the tetryl.
No information about functioning.
Nothing else to see.
OP 1664, Volume 2 - US Explosive Ordnance (1947)
USNBD - Bombs and Fuzes, Pyrotechnics (1945)
TM 9-1904, Ammunition Inspection Guide (1944)