GD&T Fundamentals (ASME Y14.5)
Master Geometric Dimensioning & Tolerancing per ASME Y14.5. Read, interpret, and apply GD&T with confidence.
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About this course
Course overview
Geometric Dimensioning & Tolerancing is the universal language of precision manufacturing — and the most common cause of rejected parts when applied incorrectly. This intensive course gives engineers, designers, and inspectors a working command of ASME Y14.5, with practical exercises drawn from real production drawings.
Curriculum
What you'll cover
GD&T Foundations
Why GD&T, the rule book (Rule #1, Rule #2), datum reference frames, and the 14 geometric characteristics.
Datums & Form Controls
Datum feature simulators, the DRF, flatness, straightness, circularity, and cylindricity.
Orientation, Location & Profile
Perpendicularity, parallelism, angularity, position tolerance, profile of a line and surface.
Bonus, MMC, LMC & Inspection
Material condition modifiers, bonus tolerance calculations, and how GD&T is verified on the shop floor.
Outcomes
By the end you'll be able to
- Read and correctly interpret GD&T-controlled drawings
- Apply the 14 geometric characteristics with proper datum references
- Calculate bonus tolerances under MMC and LMC conditions
- Specify GD&T that designs in for function and manufacturability
- Inspect GD&T callouts using CMMs and portable metrology
Who it's for
- • Mechanical designers and CAD engineers
- • Quality inspectors and CMM operators
- • Manufacturing and production engineers
- • Anyone interpreting engineering drawings
Prerequisites
- • Ability to read basic engineering drawings
- • No prior GD&T knowledge required
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