514-993-2723 info@gdtpro.ca 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

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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

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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