Dimensioning And Tolerancing Asme Y14.5m-1994 Apr 2026

The standard organizes geometric controls into several functional categories to manage different aspects of part geometry: Typical Controls Straightness, Flatness, Circularity, Cylindricity

Drawings should define the final part geometry without dictating the specific manufacturing processes (e.g., drilling vs. punching) used to achieve it. Standard Reference Temperature: All dimensions apply at 68∘F68 raised to the composed with power cap F ( 20∘C20 raised to the composed with power cap C ) unless noted otherwise. Dimensioning and Tolerancing ASME Y14.5M-1994

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 Controls the physical placement of features relative to

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 Building Blocks of the Language Controls the shape

Dimensioning and tolerancing must be fully specified so there is a complete understanding of every feature's requirements.

The standard relies on several fundamental rules that guide how dimensions and tolerances are applied: