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Essentials - Y14.5-2009 Dimensioning and Tolerancing

Overview of the contents and guidelines outlined in the ASME Y14.5 - 2009 Dimensioning and Tolerancing Standard

This Standard was last reviewed and reaffirmed in {{activeProduct.ReaffirmationYear}}. Therefore this version remains in effect.

Essentials - Y14.5-2009 Dimensioning and Tolerancing
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Buying for a group? Get 5 seats for 25% off.

Get 5 seats in any Self Study course, Guided Study course, or Learning Path for 25% off.

Use discount code 5FOR25 at checkout.


This self-study course is designed to be taken at your convenience and on your own schedule. You have 90 days to finish the course from the time of purchase.

Companies involved with making salable products rely on their products being acceptable to their customers, and this acceptance starts with a well defined product.  Drawings are used to define the product. Drawings have dimensions that define boundary conditions for individual features. Geometric Dimensioning and Tolerancing (GD&T) provides a common language for this analysis and verification.

This course introduces the contents and guidelines outlined in the ASME Y14.5 - 2009 Dimensioning and Tolerancing Standard. The information in this standard shows acceptable, standardized methods for applying dimensions and tolerances through a language of letters, numbers, and special symbols. The course covers the nine sections and five appendices of the ASME Y14.5 Standard.

You will learn to:

  • Recognize the role that drawings play in product realization
  • Identify product realization areas that require knowledge of the ASME Y14.5 Standard
  • Describe the major topics covered in the nine sections of the ASME Y14.5 Standard
  • Discuss topics covered in the five appendices

Who Should Attend
This course is designed for engineering, designing, drafting, quality control, procurement, tooling, production, purchasing, manufacturing, CAD inspection, and shop personnel; New engineers; University students; Anyone who wants to learn more about the design language of geometric dimensioning and tolerancing (GD&T) or the Y14.5 Standard


Module 1 - Scope, Principles & Symbology

  • Introduction
  • Scope, Definitions & General Dimensioning
  • General Tolerancing & Related Principles
  • Symbology

Module 2 - Datums, Form, & Orientation

  • Datum Reference Frames
  • Tolerances of Form
  • Tolerances of Orientation

Module 3 - Location

  • Tolerances of Location

Module 4 - Profile, Runout & Appendices

  • Tolerances of Profile
  • Tolerances of Runout
  • Nonmandatory Appendices

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