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UNSPECIFIED TOLERANCES
Not all dimensions will have a direct tolerance.
An UNSPECIFIED TOLERANCE is a tolerance that
applies to a dimension that does not have a specified
tolerance. A general note provides unspecified
tolerances for fractional, decimal, angular, and
metric dimensions as shown in Fig. 4-24.
Fig. 4-23. Several ways of expressing specified metric tolerances. A—Unilateral tolerance.
B—Equal bilateral tolerance. C—Limits.
A B C
THE PLUS OR MINUS SIGN IS OMITTED
IN UNILATERIAL METRIC TOLERANCES
WHEN A VALUE IS 0.
Fig. 4-24. Unspecified tolerances appear in a note on a
drawing. They apply to all dimensions that do not have any
specified tolerances.
Fig. 4-22. Angular dimensions with specified tolerances. A—Unilateral and bilateral, equal tolerances specified in degrees,
minutes, and seconds. B— Unilateral and bilateral, equal tolerances specified in decimal degrees.
A B
Dimensions and Tolerances