514-993-2723 [email protected] www.gdtpro.ca
ASME Y14.5-2009
39
Fig. 3-1 Geometric Characteristic Symbols
Fig. 3-2 Datum Feature Symbol Fig. 3-3 Datum Feature Symbols on
a Feature Surface and an Extension Line
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
39
Fig. 3-1 Geometric Characteristic Symbols
Fig. 3-2 Datum Feature Symbol Fig. 3-3 Datum Feature Symbols on
a Feature Surface and an Extension Line
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
39
Fig. 3-1 Geometric Characteristic Symbols
Fig. 3-2 Datum Feature Symbol Fig. 3-3 Datum Feature Symbols on
a Feature Surface and an Extension Line
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
39
Fig. 3-1 Geometric Characteristic Symbols
Fig. 3-2 Datum Feature Symbol Fig. 3-3 Datum Feature Symbols on
a Feature Surface and an Extension Line
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
39
Fig. 3-1 Geometric Characteristic Symbols
Fig. 3-2 Datum Feature Symbol Fig. 3-3 Datum Feature Symbols on
a Feature Surface and an Extension Line
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
39
Fig. 3-1 Geometric Characteristic Symbols
Fig. 3-2 Datum Feature Symbol Fig. 3-3 Datum Feature Symbols on
a Feature Surface and an Extension Line
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
39
Fig. 3-1 Geometric Characteristic Symbols
Fig. 3-2 Datum Feature Symbol Fig. 3-3 Datum Feature Symbols on
a Feature Surface and an Extension Line
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
39
Fig. 3-1 Geometric Characteristic Symbols
Fig. 3-2 Datum Feature Symbol Fig. 3-3 Datum Feature Symbols on
a Feature Surface and an Extension Line
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
39
Fig. 3-1 Geometric Characteristic Symbols
Fig. 3-2 Datum Feature Symbol Fig. 3-3 Datum Feature Symbols on
a Feature Surface and an Extension Line
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
39
Fig. 3-1 Geometric Characteristic Symbols
Fig. 3-2 Datum Feature Symbol Fig. 3-3 Datum Feature Symbols on
a Feature Surface and an Extension Line
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
39
Fig. 3-1 Geometric Characteristic Symbols
Fig. 3-2 Datum Feature Symbol Fig. 3-3 Datum Feature Symbols on
a Feature Surface and an Extension Line
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
39
Fig. 3-1 Geometric Characteristic Symbols
Fig. 3-2 Datum Feature Symbol Fig. 3-3 Datum Feature Symbols on
a Feature Surface and an Extension Line
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
0.05 A B C
ASME Y14.5-2009
115
increase in the size tolerance for the hole, the increase being
equal to the positional tolerance specified in Fig. 7-13. Although
the positional tolerance specified in Fig. 7-14 is zero at LMC, the
positional tolerance allowed is directly related to the minimum
material hole size as shown by the following tabulation.
Hole Diameter (Feature Minimum Material Size)
Positional Tolerance Diameter Allowed
20.25 0
20.00 0.25
19.75 0.50
19.50 0.75
7.3.6 Datum Feature Modifiers in Positional Tolerances
References to datum features of size shall be made regardless of
material boundary (RMB), at maximum material boundary (MMB), or at
least material bound-ary (LMB).
7.3.6.1 Datum Features at RMB. The functional requirements of
some designs may require that RMB be applied to a datum feature.
That is, it may be neces-sary to require the axis of an actual
datum feature (such as datum diameter B in Fig. 7-5) to be the
datum axis for the holes in the pattern regardless of the datum
fea-ture’s size. The RMB application does not permit any
Fig. 7-13 LMC Applied to Boss and Hole
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
115
increase in the size tolerance for the hole, the increase being
equal to the positional tolerance specified in Fig. 7-13. Although
the positional tolerance specified in Fig. 7-14 is zero at LMC, the
positional tolerance allowed is directly related to the minimum
material hole size as shown by the following tabulation.
Hole Diameter (Feature Minimum Material Size)
Positional Tolerance Diameter Allowed
20.25 0
20.00 0.25
19.75 0.50
19.50 0.75
7.3.6 Datum Feature Modifiers in Positional Tolerances
References to datum features of size shall be made regardless of
material boundary (RMB), at maximum material boundary (MMB), or at
least material bound-ary (LMB).
7.3.6.1 Datum Features at RMB. The functional requirements of
some designs may require that RMB be applied to a datum feature.
That is, it may be neces-sary to require the axis of an actual
datum feature (such as datum diameter B in Fig. 7-5) to be the
datum axis for the holes in the pattern regardless of the datum
fea-ture’s size. The RMB application does not permit any
Fig. 7-13 LMC Applied to Boss and Hole
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
115
increase in the size tolerance for the hole, the increase being
equal to the positional tolerance specified in Fig. 7-13. Although
the positional tolerance specified in Fig. 7-14 is zero at LMC, the
positional tolerance allowed is directly related to the minimum
material hole size as shown by the following tabulation.
Hole Diameter (Feature Minimum Material Size)
Positional Tolerance Diameter Allowed
20.25 0
20.00 0.25
19.75 0.50
19.50 0.75
7.3.6 Datum Feature Modifiers in Positional Tolerances
References to datum features of size shall be made regardless of
material boundary (RMB), at maximum material boundary (MMB), or at
least material bound-ary (LMB).
7.3.6.1 Datum Features at RMB. The functional requirements of
some designs may require that RMB be applied to a datum feature.
That is, it may be neces-sary to require the axis of an actual
datum feature (such as datum diameter B in Fig. 7-5) to be the
datum axis for the holes in the pattern regardless of the datum
fea-ture’s size. The RMB application does not permit any
Fig. 7-13 LMC Applied to Boss and Hole
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
115
increase in the size tolerance for the hole, the increase being
equal to the positional tolerance specified in Fig. 7-13. Although
the positional tolerance specified in Fig. 7-14 is zero at LMC, the
positional tolerance allowed is directly related to the minimum
material hole size as shown by the following tabulation.
Hole Diameter (Feature Minimum Material Size)
Positional Tolerance Diameter Allowed
20.25 0
20.00 0.25
19.75 0.50
19.50 0.75
7.3.6 Datum Feature Modifiers in Positional Tolerances
References to datum features of size shall be made regardless of
material boundary (RMB), at maximum material boundary (MMB), or at
least material bound-ary (LMB).
7.3.6.1 Datum Features at RMB. The functional requirements of
some designs may require that RMB be applied to a datum feature.
That is, it may be neces-sary to require the axis of an actual
datum feature (such as datum diameter B in Fig. 7-5) to be the
datum axis for the holes in the pattern regardless of the datum
fea-ture’s size. The RMB application does not permit any
Fig. 7-13 LMC Applied to Boss and Hole
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
115
increase in the size tolerance for the hole, the increase being
equal to the positional tolerance specified in Fig. 7-13. Although
the positional tolerance specified in Fig. 7-14 is zero at LMC, the
positional tolerance allowed is directly related to the minimum
material hole size as shown by the following tabulation.
Hole Diameter (Feature Minimum Material Size)
Positional Tolerance Diameter Allowed
20.25 0
20.00 0.25
19.75 0.50
19.50 0.75
7.3.6 Datum Feature Modifiers in Positional Tolerances
References to datum features of size shall be made regardless of
material boundary (RMB), at maximum material boundary (MMB), or at
least material bound-ary (LMB).
7.3.6.1 Datum Features at RMB. The functional requirements of
some designs may require that RMB be applied to a datum feature.
That is, it may be neces-sary to require the axis of an actual
datum feature (such as datum diameter B in Fig. 7-5) to be the
datum axis for the holes in the pattern regardless of the datum
fea-ture’s size. The RMB application does not permit any
Fig. 7-13 LMC Applied to Boss and Hole
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
115
increase in the size tolerance for the hole, the increase being
equal to the positional tolerance specified in Fig. 7-13. Although
the positional tolerance specified in Fig. 7-14 is zero at LMC, the
positional tolerance allowed is directly related to the minimum
material hole size as shown by the following tabulation.
Hole Diameter (Feature Minimum Material Size)
Positional Tolerance Diameter Allowed
20.25 0
20.00 0.25
19.75 0.50
19.50 0.75
7.3.6 Datum Feature Modifiers in Positional Tolerances
References to datum features of size shall be made regardless of
material boundary (RMB), at maximum material boundary (MMB), or at
least material bound-ary (LMB).
7.3.6.1 Datum Features at RMB. The functional requirements of
some designs may require that RMB be applied to a datum feature.
That is, it may be neces-sary to require the axis of an actual
datum feature (such as datum diameter B in Fig. 7-5) to be the
datum axis for the holes in the pattern regardless of the datum
fea-ture’s size. The RMB application does not permit any
Fig. 7-13 LMC Applied to Boss and Hole
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
115
increase in the size tolerance for the hole, the increase being
equal to the positional tolerance specified in Fig. 7-13. Although
the positional tolerance specified in Fig. 7-14 is zero at LMC, the
positional tolerance allowed is directly related to the minimum
material hole size as shown by the following tabulation.
Hole Diameter (Feature Minimum Material Size)
Positional Tolerance Diameter Allowed
20.25 0
20.00 0.25
19.75 0.50
19.50 0.75
7.3.6 Datum Feature Modifiers in Positional Tolerances
References to datum features of size shall be made regardless of
material boundary (RMB), at maximum material boundary (MMB), or at
least material bound-ary (LMB).
7.3.6.1 Datum Features at RMB. The functional requirements of
some designs may require that RMB be applied to a datum feature.
That is, it may be neces-sary to require the axis of an actual
datum feature (such as datum diameter B in Fig. 7-5) to be the
datum axis for the holes in the pattern regardless of the datum
fea-ture’s size. The RMB application does not permit any
Fig. 7-13 LMC Applied to Boss and Hole
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
115
increase in the size tolerance for the hole, the increase being
equal to the positional tolerance specified in Fig. 7-13. Although
the positional tolerance specified in Fig. 7-14 is zero at LMC, the
positional tolerance allowed is directly related to the minimum
material hole size as shown by the following tabulation.
Hole Diameter (Feature Minimum Material Size)
Positional Tolerance Diameter Allowed
20.25 0
20.00 0.25
19.75 0.50
19.50 0.75
7.3.6 Datum Feature Modifiers in Positional Tolerances
References to datum features of size shall be made regardless of
material boundary (RMB), at maximum material boundary (MMB), or at
least material bound-ary (LMB).
7.3.6.1 Datum Features at RMB. The functional requirements of
some designs may require that RMB be applied to a datum feature.
That is, it may be neces-sary to require the axis of an actual
datum feature (such as datum diameter B in Fig. 7-5) to be the
datum axis for the holes in the pattern regardless of the datum
fea-ture’s size. The RMB application does not permit any
Fig. 7-13 LMC Applied to Boss and Hole
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
115
increase in the size tolerance for the hole, the increase being
equal to the positional tolerance specified in Fig. 7-13. Although
the positional tolerance specified in Fig. 7-14 is zero at LMC, the
positional tolerance allowed is directly related to the minimum
material hole size as shown by the following tabulation.
Hole Diameter (Feature Minimum Material Size)
Positional Tolerance Diameter Allowed
20.25 0
20.00 0.25
19.75 0.50
19.50 0.75
7.3.6 Datum Feature Modifiers in Positional Tolerances
References to datum features of size shall be made regardless of
material boundary (RMB), at maximum material boundary (MMB), or at
least material bound-ary (LMB).
7.3.6.1 Datum Features at RMB. The functional requirements of
some designs may require that RMB be applied to a datum feature.
That is, it may be neces-sary to require the axis of an actual
datum feature (such as datum diameter B in Fig. 7-5) to be the
datum axis for the holes in the pattern regardless of the datum
fea-ture’s size. The RMB application does not permit any
Fig. 7-13 LMC Applied to Boss and Hole
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
115
increase in the size tolerance for the hole, the increase being
equal to the positional tolerance specified in Fig. 7-13. Although
the positional tolerance specified in Fig. 7-14 is zero at LMC, the
positional tolerance allowed is directly related to the minimum
material hole size as shown by the following tabulation.
Hole Diameter (Feature Minimum Material Size)
Positional Tolerance Diameter Allowed
20.25 0
20.00 0.25
19.75 0.50
19.50 0.75
7.3.6 Datum Feature Modifiers in Positional Tolerances
References to datum features of size shall be made regardless of
material boundary (RMB), at maximum material boundary (MMB), or at
least material bound-ary (LMB).
7.3.6.1 Datum Features at RMB. The functional requirements of
some designs may require that RMB be applied to a datum feature.
That is, it may be neces-sary to require the axis of an actual
datum feature (such as datum diameter B in Fig. 7-5) to be the
datum axis for the holes in the pattern regardless of the datum
fea-ture’s size. The RMB application does not permit any
Fig. 7-13 LMC Applied to Boss and Hole
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
115
increase in the size tolerance for the hole, the increase being
equal to the positional tolerance specified in Fig. 7-13. Although
the positional tolerance specified in Fig. 7-14 is zero at LMC, the
positional tolerance allowed is directly related to the minimum
material hole size as shown by the following tabulation.
Hole Diameter (Feature Minimum Material Size)
Positional Tolerance Diameter Allowed
20.25 0
20.00 0.25
19.75 0.50
19.50 0.75
7.3.6 Datum Feature Modifiers in Positional Tolerances
References to datum features of size shall be made regardless of
material boundary (RMB), at maximum material boundary (MMB), or at
least material bound-ary (LMB).
7.3.6.1 Datum Features at RMB. The functional requirements of
some designs may require that RMB be applied to a datum feature.
That is, it may be neces-sary to require the axis of an actual
datum feature (such as datum diameter B in Fig. 7-5) to be the
datum axis for the holes in the pattern regardless of the datum
fea-ture’s size. The RMB application does not permit any
Fig. 7-13 LMC Applied to Boss and Hole
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
115
increase in the size tolerance for the hole, the increase being
equal to the positional tolerance specified in Fig. 7-13. Although
the positional tolerance specified in Fig. 7-14 is zero at LMC, the
positional tolerance allowed is directly related to the minimum
material hole size as shown by the following tabulation.
Hole Diameter (Feature Minimum Material Size)
Positional Tolerance Diameter Allowed
20.25 0
20.00 0.25
19.75 0.50
19.50 0.75
7.3.6 Datum Feature Modifiers in Positional Tolerances
References to datum features of size shall be made regardless of
material boundary (RMB), at maximum material boundary (MMB), or at
least material bound-ary (LMB).
7.3.6.1 Datum Features at RMB. The functional requirements of
some designs may require that RMB be applied to a datum feature.
That is, it may be neces-sary to require the axis of an actual
datum feature (such as datum diameter B in Fig. 7-5) to be the
datum axis for the holes in the pattern regardless of the datum
fea-ture’s size. The RMB application does not permit any
Fig. 7-13 LMC Applied to Boss and Hole
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
115
increase in the size tolerance for the hole, the increase being
equal to the positional tolerance specified in Fig. 7-13. Although
the positional tolerance specified in Fig. 7-14 is zero at LMC, the
positional tolerance allowed is directly related to the minimum
material hole size as shown by the following tabulation.
Hole Diameter (Feature Minimum Material Size)
Positional Tolerance Diameter Allowed
20.25 0
20.00 0.25
19.75 0.50
19.50 0.75
7.3.6 Datum Feature Modifiers in Positional Tolerances
References to datum features of size shall be made regardless of
material boundary (RMB), at maximum material boundary (MMB), or at
least material bound-ary (LMB).
7.3.6.1 Datum Features at RMB. The functional requirements of
some designs may require that RMB be applied to a datum feature.
That is, it may be neces-sary to require the axis of an actual
datum feature (such as datum diameter B in Fig. 7-5) to be the
datum axis for the holes in the pattern regardless of the datum
fea-ture’s size. The RMB application does not permit any
Fig. 7-13 LMC Applied to Boss and Hole
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
ASME Y14.5-2009
115
increase in the size tolerance for the hole, the increase being
equal to the positional tolerance specified in Fig. 7-13. Although
the positional tolerance specified in Fig. 7-14 is zero at LMC, the
positional tolerance allowed is directly related to the minimum
material hole size as shown by the following tabulation.
Hole Diameter (Feature Minimum Material Size)
Positional Tolerance Diameter Allowed
20.25 0
20.00 0.25
19.75 0.50
19.50 0.75
7.3.6 Datum Feature Modifiers in Positional Tolerances
References to datum features of size shall be made regardless of
material boundary (RMB), at maximum material boundary (MMB), or at
least material bound-ary (LMB).
7.3.6.1 Datum Features at RMB. The functional requirements of
some designs may require that RMB be applied to a datum feature.
That is, it may be neces-sary to require the axis of an actual
datum feature (such as datum diameter B in Fig. 7-5) to be the
datum axis for the holes in the pattern regardless of the datum
fea-ture’s size. The RMB application does not permit any
Fig. 7-13 LMC Applied to Boss and Hole
--`,,`,,,``,`,``,,``,`,`,,,`,`,`-`-`,,`,,`,`,,`---
StraightnessFlatnessCircularityCylindricity
Profile of a lineProfile of a surface
Position
AngularityPerpendicularityParallelism
Circular runoutTotal runout
TRAN
S.
ROT.
SURF
.
F.O
.S.
LIN
E
0
0
0
0
1,2 or 3
0,1,2 or 3
1,2 or 3
1,2
1,21,2
1,2
1,2RFSRFS
DOFELEMENTS
N/A
N/A
N/A
N/A
Composite control of form and coaxiality.
N/A
N/AN/A
N/A
RFB
RFB
Parallel lines in a plane
Concentric circles in a plane
Parallel planes in 3-D space
Coaxial cylindres in 3-D space
Basic lines profiles in a plane
Basic surfaces in 3-D space
Cylindrical (Ø) / Parallel planes / Sphere
Cylindrical (Ø) / Parallel planes
Cylindrical (Ø) / Parallel planes
Cylindrical (Ø) / Parallel planes
Two circles centered on a datum axis.
Two cylindres centered on a datum axis.
Tab-To
l-v11
-recto.idraw
TOLERANCE ZONE
This symbol means that the geometric tolerance cannot control
this type of element.
*Comprises regular F.O.S., like Cylindrical and Spherical
surfaces, circles, and opposed parallel planes, and irregular
F.O.S.
Regardless of Feature Size ( and not allowed on tolerance
zone)
Regardless of Feature Boundary ( and not allowed on datums)
This symbol means that the geometric tolerance can control this
type of element.
The tolerance can block degrees of freedom in rotation
(u,v,w).The tolerance can block degrees of freedom in translation
(x,y,z).
Surface elements, like a plane, a cylinders, a cone, or any
complex surface.
Any linear element on planes, cylinders, cones, or any geometry
with surface lines.
Degrees Of Freedom. There are 6 D.O.F, 3 in translation (X,Y,Z)
and 3 in rotation (u,v,w).
Feature Of Size. Elements defined using toleranced dimensions,
as opposed to basic dimensions*.
NOTE: Modifiers are only allowed on orientation tolerances when
applied to features of size.Number of
datums allowed.
Applicability of and
modifiers on datums.
Applicability of and
modifiers on the tol. zone.
F.O.S
