Type 90 5.7-cm (57-mm) Substitute Projectile57-mm Ho-401 High-Explosive Projectile
Japanese Explosive Ordnance – Army Ammunition – Navy Ammunition
Chapter 4 – Section 1
ARMY PROJECTILES
Type 92 - 5.7 cm (57-mm) Armor-Piercing Projectile
Weight of complete round: 3.13 kg. (6.89 pounds).
Weight of projectile, filled (fuzed): 2.58 kg. (5.68 pounds).
Weight of filling: 0.10 kg.

Filling: Two sections of explosive, individually wrapped in paper. Upper section, pressed picric acid and wax; lower section, cas TNT.

Diameter at bourrelet: 57 mm (minus tol.).
Length of projectile (without fuze adapter): 181 mm (7 1/4 inches).
Length of propellant case: 121 mm (4 3/4 inches).
Length of assembled round: 280 mm (11 1/16 inches).
Width of rotating band: 10 mm.
Weapons in which used: Type 90 tank gun, type 97 tank gun.
Fuzing: Type 92 small base fuze.
Propellant: Mk 1 sq. grain (med.), 113 grams.

Figure 234 – Type 92 5.7-cm Armor-Piercing Projectile.

Type 90 5.7-cm (57-mm) Substitute Projectile57-mm Ho-401 High-Explosive Projectile