There is nothing to worry about though, as this is mainly attributed to structural changes in the document. Those who have purchased the digital version of ASME Y14.5 2018 must have received an instant shock upon seeing the number of pages, which have dramatically gone up by more than 100 to 326: the 2009 version was 214 pages long. We would like to start with the change that is most obvious. In the end, there is a short section on how concerned you should be about integrating it into your procedures. In this article, we identify the major changes from 2009 to 2018 and present our opinion on how they will make GD&T better. Like its predecessors, recent ones of which came out in 20, the much-awaited 2018 publication has attracted constructive debate from people curious about the changes made to it and how they contribute to the ever-improving flow of GD&T. The Y14.5, published by the American Society of Mechanical Engineering (ASME), is one of the world’s most widely accepted standards for geometric dimensioning and tolerancing. One such development, and something that is a big deal to GD&T professionals these days, is the 2018 release of the ASME Y14.5 GD&T standard. In fact, GD&T is perhaps one of the few industries where changes are first reviewed and debated by professionals for years before being fully adopted as common practice. Each update to existing rules is made rationally, after collecting feedback from industry members and evaluating the exact pathways to further refinement. Rather than being marked by radical changes, GD&T has experienced stable growth. A primitive concept in the 1940s, GD&T is now an internationally acclaimed system that has become the industry standard for mechanical part production. The rise of Geometric Dimensioning & Tolerancing has been incredibly phenomenal. ASME recently released the much-awaited Y14.5 2018 GD&T Standard! Find out what has changed from the 2009 edition and what’s you need to know…

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