Size limits still apply
A hole outside its allowed size range cannot gain compliance just by receiving more position tolerance. Any additional tolerance requires the applicable modifier, feature type and complete drawing rules.
A scoped teaching example
Assume a hole is allowed from 10.00 to 10.20 mm and has an applicable 0.10 mm positional tolerance at MMC. In the simple case, a qualifying evaluated size of 10.10 mm departs 0.10 mm from MMC, allowing 0.20 mm total geometric tolerance. This invented example is not an inspection result for an actual drawing.
The modifier location matters
An M following a tolerance value and an M following a datum reference have different roles. Do not add a datum-related effect directly to a position value using the same shortcut.
Continue your task
Sources and review scope
Reviewed 23 October 2026. Arithmetic examples are labelled separately from source-table facts and standard scope.
KEYENCE — Maximum material condition
Manufacturer explanation: departures from MMC do not remove the need to meet size limits.
Open the original source ↗KEYENCE — Modifier locations
Distinguishes modifiers following the tolerance value from those following a datum reference.
Open the original source ↗