Fundamentals of GD&T ASME Y14.5M 1994 - Advanced Level ET2001

Topics: Quality, Safety & Maintenance

This 3-day advanced-level Fundamentals of GD&T course is an in-depth study of the terms, rules, symbols, and concepts of geometric dimensioning and tolerancing as prescribed in the ASME Y14.5M-1994 Standard. The course can be conducted in three 8-hour sessions or with flexible scheduling including five mornings or five afternoons. 

This class includes all the content from the Fundamentals of GD&T 2-day foundational course: an explanation of geometric symbols, including each symbol’s requirements, tolerance zones, and limitations. It compares GD&T to coordinate tolerancing, and explains tolerance zones; Rules #1 and #2; form and orientation controls; tolerance of position; runout and profile controls. Newly acquired learning is reinforced throughout the class with more than 100 practice problems using industrial drawings.

This in-depth, advance-level course also covers
  • More detailed discussion of terms, concepts, and symbols used in GD&T
  • Using tolerances on CAD models
  • Discussions of verification principles for each geometric tolerance
  • Related and unrelated actual mating envelope
  • Functional and cartoon gages
  • Examples of inspection methods for each geometric tolerance
  • Critical thinking discussion
  • 50 additional practice problems using industrial drawings

Newly acquired learning is reinforced throughout the class with more than 150 practice exercises. 

Each participant receives:
  • The Fundamentals of GD&T (ASME Y14.5M-1994) textbook by Alex Krulikowski
  • GD&T Ultimate Pocket Guide (1994)
  • A GD&T Workbook with Engineering Drawings (1994)

This course provides a complete look at GD&T Fundamentals. For more complex GD&T topics, like the expanded use of composite position and profile tolerances, customized datum reference frames, the translation modifier, and applying GD&T to non-rigid parts, see our Advanced Concepts of GD&T course.

Learning Objectives

By attending this course, you will be able to: 

  • Describe engineering drawings: importance, drawing conventions, dimensions and tolerances, standards*
  • Describe what dimensioning and tolerancing is
  • Explain why geometric tolerancing is superior to coordinate tolerancing*
  • Describe the key terms used in geometric tolerancing
  • Recognize the modifiers and symbols used in GD&T
  • Explain the rules used in GD&T
  • Describe the concepts of basic dimensions, worst-case boundary, virtual condition, inner and outer boundary, and bonus tolerance
  • Interpret the various types of tolerances (flatness, straightness, circularity, cylindricity*, perpendicularity, angularity*, parallelism, position, concentricity*, symmetry*, runout, and profile)
  • Describe the datum system
  • Interpret applications of datum targets, feature of size datum specifications (RFS & MMC)
  • Describe the fundamental concepts of tolerance of position
  • Interpret tolerance of position special applications*
  • Calculate tolerance of position tolerance values using the fixed and floating fastener formulas*

*Not covered in 2-day foundational-level course

This course teaches GD&T fundamentals. For more advanced GD&T concepts (composite tolerancing, tolerance analysis, datum selection, non-rigid part dimensioning) see our Advanced Concepts of GD&T course offering. 

Who Should Attend

This course is valuable for individuals who create or interpret engineering drawings, product and gage designers; process, product, and manufacturing engineers; supplier quality engineers/professionals; CMM operators; buyers/purchasers; checkers; inspectors; technicians; and sales engineers/professionals.


Participants should have basic knowledge and command of the  GD&T ASME Y14.5 standard, which provides guidelines for engineering drawing sheet layout.

You must complete all course contact hours and successfully pass the learning assessment to obtain CEUs.

Jim Beary, John-Paul Belanger, Robert Charlton, Evan Kessick, Ming Li, Dale MacPherson, Curtis Pawlowski, James Pearson, Harry Taylor, or Andy Yu

All SAE GD&T instructors are industry professionals with years of experience applying geometric dimensioning and tolerancing on the job.

Our instructors:

  • Have expert knowledge of the Y14.5 Standard
  • Are ASME and/or ASQ certified
  • Have current or recent industrial experience using GD&T 
  • Possess at least five years of experience using GD&T
  • Are experienced and skilled using SAE teaching materials
SAE instructors use identical training materials and lesson plans, so you receive the same class presentation from every trainer.
Duration: 3 Days
CEUs: 2.0

Fees: $1699.00

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If paying by any other method or if you have general questions, please contact SAE Customer Service.

Led by our senior GD&T professionals, ETC2109 is available as an add-on service to any live (virtual or in person) instructor led private corporate GD&T course purchase. This add-on GD&T Review is designed to help your staff learn to implement GD&T with real life examples, however it is not designed to address custom consulting projects. Please ask your sales associate about this add-on service.