The 5-kg. hemispherical A/TK mine is a weapon designed to help overcome the shortage of A/TK weapons and armored vehicles which the Japanese forces experienced during the war. It is a suicide weapon, intended to be placed against an armored vehicle either by hand or by means of a pole or lines.

The mine is hemispherical in shape, black in color, with the fuze mounted opposite the flat face. It is equipped with a straight projection to which a pole may be lashed, and with four eyelets to which lines may be attached.

The mine is detonated by the same fuze as that used in the type 99 magnetic A/TK mine.

No specimens of this mine were found outside of the Japanese homeland, very few of them having been produced.

Figure 161 – 5-kg. Hemispherical Antitank Land Mine.