EL506_EL2024_04 - Advanced Geometric Dimensioning and Tolerancing (GD&T) – Y14.5 has been added to your cart.

Advanced Geometric Dimensioning and Tolerancing (GD&T) – Y14.5

Gain advanced knowledge of geometric dimensioning controls for mechanical engineering drawings per the ASME Y14.5 Dimensioning and Tolerancing standard.

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  • Jul 08-Aug 19th, 2024


  • Aug 26-Oct 07th, 2024


  • Oct 21-Dec 02nd, 2024



Extended Enrollment Available

Enrollment in Guided Study courses via the shopping cart automatically closes the day before each session begins. If you wish to enroll in a session in progress, please call ASME Customer Care:

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Outside of North America: (973) 882-1170

Please note: When choosing extended enrollment, keep in mind that all sessions end on the originally published date.

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This advanced, online, instructor-supported course thoroughly covers some of the more used geometric dimensioning controls used on mechanical engineering drawings. The basic applications of position are explained in greater detail including fixed and floating fastener, zero tolerance, size feature datums, and composite vs. two single segments. How to control the size and location non-size features are also explained. Coaxial relationships and control of rectangular features are also covered.

Special Requirement
Access to the ASME Y14.5 - 2018 Dimensioning and Tolerancing Standard is required. While required, the Y14.5 Standard is not included in the purchase of the course. To purchase the Y14.5 Standard, click here.

By participating in this course you will learn how to successfully:

  • Develop an in-depth understanding of GD&T
  • Explain basic applications of position and size concepts
  • Identify practical tools that you can apply on the job

Who Should Attend?
Professionals who use the ASME Y14.5 Dimensioning and Tolerancing standard, who work in design, drafting, quality, procurement, tooling, production, and manufacturing.

A Certificate of Completion will be issued to registrants who successfully complete the course and achieve a passing score on all instructor-graded assignments and 75% or higher on all assessments.

To take this course you should have a personal computer, Web browser, Internet connection, and software to display PDF files (such as Adobe Reader).


Module 1: Introduction

  • Dimension types and applications
  • Definitions
  • GDT Professional Certification Exam
  • The role of dimensions

Module 2: Floating Fastener Condition

  • Position MMC
  • Tooling / Production
  • Inspection
    • CMM (coordinate measuring machine)
    • Functional gage
    • Manual inspection

Module 3: Zero Tolerancing

  • Position zero tolerance
  • Tooling / production
  • Inspection

Module 4: Fixed Fastener Condition

  • Position MMC

    • Pitch cylinder rule
    • To MMC (maximum material condition) or not to MMC
  • Tooling / production
  • Inspection
    • CMM
    • Functional gage
    • Open setup

Module 5: Fixed Fastener Condition

  • Non-functional datum feature
  • Functional secondary size datum feature
    • RFS
    • MMC
  • Shift
  • Tertiary size datum feature

Module 6: Composite & Two Single Segments

  • Introduction
  • Composite positional tolerancing
  • Two single segment feature control
    • Frames

Module 7: Paper Gaging

  • Part description
  • Location data
  • Paper gage
  • Calculating the tolerance
  • Additional information
  • Limitations

Module 8: Non-Cylindrical Tolerance Zones

  • Position zones

    • Conical
    • Bidirectional
    • Elongated
  • Composite profile zones

Module 9: Dimensional Management

  • Current quality efforts
  • Dimensional management rational
  • Dimensional management phases
    • Set objectives
    • Develop dimensioning strategy
    • Apply dimensions
    • Analyze dimensions
    • Verify dimensions
  • Resolving problems
  • The dimensional analyst
  • The educational dilemma

Module 10: Dimensional Analysis Part 1

  • Variation
  • Analysis methods
  • Computer modeling
  • Analysis stages

Module 10: Dimensional Analysis Part 2

  • Identify the problem
  • Choose the answer
  • Identify the path
  • Perform the math

Evan Janeshewski, GDTP

Principal, Axymetrix Quality Engineering, Inc.

Evan Janeshewski is the founder and president of Axymetrix Quality Engineering Inc. in Langley, BC. He has more than 20 years of experience teaching GD&T at beginner, intermediate and advanced levels.

More Information


Guided Study

Online learning augmented with instructor-supported activities and/or graded assignments to complete at your own pace. Courses run in 6-week sessions.
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