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ISO 2768-mH[1]

ISO 2768-mH[1]

ISO 2768-mH Tolerances for linear dimensions:

Permissible deviations for basic size range in millimetre.

Tolerance class

0.5-3 3-6 6-30 30-120 120-400400-1000 1000-2000 2000-

4000

m

+/-0.1 +/-0.1 +/-0.2 +/-0.3 +/-0.5 +/-0.8 +/-1.2 +/-2

Permissible deviations for broken edges (external radii and chamfer heights):

Permissible deviations for basic size range in millimetre.

Tolerance class

0.5-3 3-6 6- m +/-0.2 +/-0.5 +/-1

Permissible deviations of angular dimensions:

Permissible deviations for ranges of lengths, in millimetres of the shorter side of the angle concerned.

Tolerance class -10 10-50 50-120 120-400 400- m +/-1° +/-0°30’ +/-0°20’ +/-0°10’ +/-0°5’

Tolerances on straightness and flatness:

Straightness and flatness tolerances for ranges of nominal lengths. Tolerance

class

-10 10-30 30-100 100-300 300-1000 1000-3000

H 0.02 0.05 0.1 0.2 0.3 0.4

Tolerances on perpendicularity:

The longer of the two features shall be taken as the datum; if the features are of equal nominal length either may be taken as the datum.

Perpendicularity tolerances for ranges of nominal lengths of the shorter side. Tolerance class

-100 100-300 300-1000 1000-3000

H 0.2 0.3 0.4 0.5

Tolerances on symmetry:

The longer of the two features shall be taken as the datum; if the features are of equal nominal length either may be taken as the datum.

Symmetry tolerances for ranges of nominal lengths.

Tolerance class

-100 100-300 300-1000 1000-3000

H 0.5

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