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Tolerance indications on the drawing must clearly represent all dimensions, shapes, positional relationships, etc. If there is no tolerance specified in the drawing, you can use the normal tolerance as a basis.
example
・Length and dimensions
Outer dimensions, inner dimensions, step dimensions, diameters, radius, spacing, roundness and chamfer dimensions
・Length and dimensions
Outer dimensions, inner dimensions, step dimensions, diameters, radius, spacing, roundness and chamfer dimensions
・Angular dimensions
Angles, right angles (90°) and polygons that are not indicated in the drawing.
・ Tolerances of counterbored hole and chamfer dimensions, etc.
Standard No.
JIS B 0405-1991