GEOMETRIC DIMENSIONING AND TOLERANCING
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Free GD&T Downloads
This PDF is a condensed two-page summary of ASME Y14.5M-2018. The first page is a summary of all the geometric control symbols that shows graphically how they apply: to surfaces or to features of size. The second is a more conventional reference guide that has a lot of useful information about each control symbol, now updated for the 2018 standard and includes several useful acronyms. Let us know if you have any questions or comments!
Map of the GD&T World (2018)
Tolerance Stack Spreadsheet
This simple Excel spreadsheet is yours to download free of charge. It has two worksheets for calculating stacks, one that uses limit (max/min) tolerancing, and one that uses nominal plus/minus tolerancing. There were over 7,900 downloads of previous versions. We hope you find it a helpful starting point, and let us know if you have any comments for improvements! Thanks to Marc Adorian and Zachary Amico for recent improvements to the spreadsheet.
(Download Tol Stack Spreadsheet)
Attributes vs. Tools Matrix
This one page PDF file summarizes the attributes that each category of ASME Y14.5 symbols control. Let us know what you think about this document; we think it's a great way to summarize a lot of Y14.5 content that's often left unexplained.
ASME-ISO-Comparison
ASME-ISO-Comparison-Details
A side-by-side comparison of the ASME Y14.5-2009, ASME Y14.5M-1994, ANSI Y14.5M-1982, and ISO standards on GD&T. If you have any comments or suggestions for improvement, please email us. Thanks!
Map of the GD&T World (1994)
This PDF is a condensed two-page summary of ASME Y14.5M-1994. The first page is a summary of all the geometric control symbols that shows graphically how they apply: to surfaces or to features of size. The second is a more conventional reference guide that has a lot of useful information about each control symbol. Enjoy!