2768-mk [verified]: General Tolerance Iso

Applies to flatness, straightness, perpendicularity, symmetry, and circular runout.

If you need a precision shaft to slide into a hole, you must use a standard like ISO 286 (e.g., H7/g6) instead of general tolerances. general tolerance iso 2768-mk

It keeps drawings clean. Only critical dimensions (like a bearing fit or a sealing surface) need specific ± tolerances. Applies to flatness

Thread tolerances (like 6H or 6g) must be specified separately. general tolerance iso 2768-mk