# GD&T Symbols

The flashcards below were created by user joshuacassel on FreezingBlue Flashcards.

1. Straightness

Symbol: ?
Type of Tolerance: _____
Definition: _____
• Symbol:
• T.o.T.: Form
• Definition: Straightness is a condition in which the elements of a surface or its axis are in a straight line.
2. Flatness

Symbol: ?
Type of Tolerance: _____
Definition: _____
• Symbol:
• T.o.T.: Form
• Definition: Flatness is a condition in which all elements are in one plane.
3. Circularity

Symbol: ?
Type of Tolerance: _____
Definition: _____
• Symbol:
• T.o.T.: Form
• Definition: Circularity refers to a condition of a circular line or the surface of a circular feature where all points on the line or on the circumference of a plane cross section of the feature are the same distance from a common axis or center point.
4. Cylindricity

Symbol: ?
Type of Tolerance: _____
Definition: _____
• Symbol:
• T.o.T.: Form
• Definition: Cylindricity is a condition of a surface in which all points of the surface are the same distance from a common axis
5. Profile of a Line

Symbol: ?
Type of Tolerance: _____
Definition: _____
• Symbol:
• T.o.T.: Profile
• Definition: A Profile of a Line tolerance may be directed to a line of any length or shape.
6. Profile of a Surface

Symbol: ?
Type of Tolerance: _____
Definition: _____
• Symbol:
• T.o.T.: Profile
• Definition: Profile of a Surface indicates a tolerance zone having the same form as the basic surface, with a uniform width equal to the specified tolerance within which the entire surface must lie.
7. Perpendicularity

Symbol: ?
Type of Tolerance: _____
Definition: _____
• Symbol:
• T.o.T.: Orientation
• Definition: Perpendicularity is the condition of a surface at 90° to a datum plane or axis.
8. Angularity

Symbol: ?
Type of Tolerance: _____
Definition: _____
• Symbol:
• T.o.T.: Orientation
• Definition: Angularity is a condition of a surface or axis at a specified angle (other than 0° or 90°) for a datum.
9. Parallelism

Symbol: ?
Type of Tolerance: _____
Definition: _____
• Symbol:
• T.o.T.: Orientation
• Definition: Parallelism is the condition of a surface equidistance at all points from a datum plane.
10. Symmetry

Symbol: ?
Type of Tolerance: _____
Definition: _____
• Symbol:
• T.o.T.: Location
• Definition: ?
11. Position

Symbol: ?
Type of Tolerance: _____
Definition: _____
• Symbol:
• T.o.T.: Location
• Definition: Position defines a zone within which the center, axis, or center plane of a feature or size is promitted to very from the true position.
12. Concentricity

Symbol: ?
Type of Tolerance: _____
Definition: _____
• Symbol:
• T.o.T.: Location
• Definition: ?
13. Circular Runout

Symbol: ?
Type of Tolerance: _____
Definition: _____
• Symbol:
• Type of Tolerance: Runout
• Definition: Circular Runout provides control of circular elements of a surface. The tolerance is applied independently at any cross section as the part is rotated 360°.
14. Total Runout

Symbol: ?
Type of Tolerance: _____
Definition: _____
• Symbol:
• T.o.T.: Runout
• Definition: Total Runout concerns the runout of a complete surface, not merely the runout of each circular element.
 Author: joshuacassel ID: 191531 Card Set: GD&T Symbols Updated: 2013-01-06 21:09:49 Tags: GD Symbols Folders: Description: GD&T Symbols with definitions Show Answers: