Y14.5 - Dimensioning and Tolerancing (GD&T)

Y14.5 is the ASME standard that defines the system of geometric dimensioning and tolerancing (GD&T) used to specifying the size, form, orientation, and location of features on engineering drawings. It establishes a uniform language for communicating design intent, ensuring parts are manufactured and inspected consistently, and it includes rules for datum reference frames, symbols, and tolerance zones.