Modifiers like Maximum Material Condition (MMC) allow for "bonus tolerance" as the part’s actual size deviates from its limit, providing flexibility for manufacturing without sacrificing assembly. Y14.5M-1994 - Dimensioning and Tolerancing - ANSI Webstore
Controls the shape of a feature regardless of its location or orientation. Parallelism, Perpendicularity, Angularity Controls the rotation of a feature relative to a datum. Location Position, Concentricity, Symmetry Dimensioning and Tolerancing ASME Y14.5M-1994
Dimensions and tolerances typically apply when the part is in its "free state" and not being forced or bolted down. Key Components of GD&T in Y14.5M-1994 Modifiers like Maximum Material Condition (MMC) allow for
Controls the physical placement of features relative to each other or a datum. Profile of a Surface, Profile of a Line Controls the boundary of a feature's outline. Runout Circular Runout, Total Runout Controls variation in a surface when rotated about an axis. Building Blocks of the Language Runout Circular Runout, Total Runout Controls variation in