What is ASME Y14.5?

ASME Y14.5 is an American Society of Mechanical Engineers (ASME) standard that establishes uniform practices for stating and interpreting dimensioning, tolerancing, and related requirements for use on engineering drawings and in related documents. It is commonly used to ensure clear and unambiguous communication of design intent, facilitating manufacturing, inspection, and assembly of mechanical parts. This standard defines symbols, rules, and methods for specifying geometric tolerances, such as flatness, roundness, position, and profile, to control the form, orientation, and location of features on a part.