40 GD&T: Application and Interpretation
Copyright Goodheart-Willcox Co., Inc.
21. A rectangle drawn around a dimension
value indicates that the dimension is
____________.
22. The abbreviation for maximum material
condition is ____________.
Short Answer
23. Describe what the letter X means when no
space is placed between it and a preceding
number.
24. List the form tolerances.
25. Sketch each of the following tolerance
symbols.
A. Straightness
B. Perpendicularity
C. Total runout
D. Line profi le
E. Position
26. Sketch each of the following dimensioning
symbols.
A. Diameter
B. Counterbore
C. Spotface
D. Countersink
E. Slope
27. Based on the current standard, in which
location(s) are the datum feature references
placed in a feature control frame?
28. Sketch the two material condition modifi er
symbols that may be shown following a
tolerance value in a feature control frame
and label each of them.
Application Problems
Some of the following problems require that a sketch
be made. All sketches should be neat and accurate.
Each problem description requires the addition of some
dimensions for completion of the problem. Apply all
required dimensions in compliance with dimensioning
and tolerancing requirements.
29. Show a 1.125″ diameter for the given shaft.
30. Show a .625″ radius on the inside corner.
31. Use symbology to specify the counterbore and
hole size in a note attached with a leader. The
hole has a .282″ diameter. The counterbore is
.438″ diameter and is .375″ deep.
32. Use symbology to specify the countersink
and hole size in a note. The hole has a .218″
diameter. The countersink has an 82° angle
and a .438″ diameter.
33. Make the 1.25″ dimension a reference value.