The ASME Y14.5-2009 Standard on Dimensioning and Tolerancing
Revision / Edition: 09 Chg: Date: 00/00/09
The Y14.5 standard is considered the authoritative guideline to the style language of geometric dimensioning and tolerancing (GD&T.) It establishes uniform practices for stating and interpreting GD&T and related requirements for use on engineering drawings and in related documents.
GD&T is an essential tool for communicating style and design intent
The new ASME Y14.5 (2009) dimensioning and tolerancing typical was published in April, 2009. According to the American Society of Mechanical Engineers (ASME), “a consensus committee of experts revised Y14.five for 21st-century applications.” The new conventional is a replacement of ASME Y14.5 2009 M-1994.
The revised common includes changes to:
The concept of feature of size
Datum references and degrees of freedom
Composite position tolerances
Surface boundaries and axis methods of interpretation
Symbology and modifiers tools
As the foremost expert on GD&T, ETI founder Alex Krulikowski was involved in creating this new version of ASME Y14.five. He has developed several products to help with the transition from the 1994 to 2009 common: