What's New In the ASME Y14.5-2009 GD&T Dimensioning and Tolarancing Standard?

Tolerances, Engineering Design & Limits & Fits

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Open and view: What's New In the ASME Y14.5-2009 GD&T Dimensioning and Tolarancing Standard?I

Overview of Revisions

  • One of the major revisions is the reformatting of the Standard, the order of
    the sections and material within the sections without reversing any of the 1994 principles.
  • Section 1 Scope, Definitions, and General Dimensioning
  • Section 2 General Tolerancing and Related Principles
  • Section 3 Symbology
  • Section 4 Datum Reference Frames
  • Section 5 Tolerances of Form
  • Section 6 Tolerances of Orientation
  • Section 7 Tolerances of Location
  • Section 8 – Tolerances of Profile
  • Section 9 – Tolerances of Runout
  • Appendix A – Principle Changes and Improvements
  • Appendix B – Formula for Positional Tolerancing
  • Appendix C – Form, Proportion, and Comparison of Symbols
  • Appendix D – Former Practices
  • Appendix E – Decision Diagram for Geometric Controls


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