Fixed Fastener Condition Projected
Tolerance Zone Compensation Calculator


Geometric Dimensioning & Tolerancing Training

(This calculator requires a java - enabled browser)

This calculator calculates  position tolerances utilizing principles and concepts withinASME Y14.5-2009 and 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 Description of Variables Used in Calcualtor

This calculator will calculate the required field compensating for the effects of the fastener projection.  Calculations assume a line-line case at tolerance and feature-of-size maximum departure.


  1. Units may be given as inches, mm, meters or whatever.
  2. Units DO NEED to be consistant (e.g. all inches or all mm).

Fixed Fastener Condition True Position and Projection Zone Calculator

Fastener (Shaft)
Diameter (MMC)

Hole Diameter

Hole Tolerance
(Position MMC)

Fastener (Shaft)
Tolerance (RFS)

Projected Tolerance Zone

Thread Engagement

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