NF E 02-352 (part of the Geometrical Product Specifications or GPS) establishes . It is used when specific tolerances for dimensions and features are not individually marked on a drawing.
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: The default standard for most industrial applications.
Does not apply to thermal cutting (laser, water jet), deep-drawn (stamped) parts, or burr heights. UNM - Union de Normalisation de la Mécanique Tolerance Classification