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Geometric Dimensioning & Tolerancing Training
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This calculator calculates position tolerances
utilizing principles and concepts within ASME Y14.5M - 1994, Geometric
Dimensioning and Tolerancing (GD&T).
For the equations behind this calculator, see:
"Geometric Boundaries"
Interpretation and Application of
Geometric Dimensioning and Tolerancing
Open
Calculator Negative Tolerance numbers indicate interference. This calculator will calculate the unknown for the given conditions. Four (4) inputs
are required, See the application illustration at bottom of page. The following are definitions for the elements: Fastener (Shaft) Diameter - This is the maximum size (MMC) of the bolt, shaft or other feature of size. Hole Diameter
- This is the smallest hole (MMC) for the given feature of size. Fastener (Shaft) Tolerance - The positional tolerance of the installed
bolt, screw or shaft. (Calculator does not compensate for projection zone). Hole Tolerance - This is the clearance hole positional
tolerance. Clearance - This is the clearance desired for the hole - fastener (shaft) when the holes are produced at a worst case positional
tolerance. This value is set to zero (0) for a line to line fit.
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