The paper assesses the n = 1 “overlap” error fields produced by localized steel objects (the object size is much less than the distance from the object to the plasma) placed at different levels of the ITER Tokamak building. The value of the error field proportionally depends on the mass of steel object. This paper studies the effect of the shape of steel objects on error field. For evaluations, three shapes of steel objects are considered allowing analytical calculation of their magnetization: a steel ball and a thin steel cylinder oriented either perpendicularly or parallel to the external magnetic field. The paper demonstrates a strong effect on the error field of the object shape and orientation.