[object Object]Engineering Information, Conversions and Calculations

DIN Tolerances

The latest DIN standard sheet version applies to all parts made to DIN standards.

Variations on dimensions without tolerance values are according to "DIN ISO 2768-mk".

GENERAL TOLERANCES FOR LINEAR AND ANGULAR DIMENSIONS (DIN ISO 2768 T1)

LINEAR DIMENSIONS:
Permissible deviationsf (fine)Tolerance classv (very coarse)
in mm for ranges indesignation (description)
nominal lengthsm (medium)c (coarse)
0.5 up to 3±0.05±0.1±0.2-
over 3 up to 6±0.05±0.1±0.3±0.5
over 6 up to 30±0.1±0.2±0.5±1.0
over 30 up to 120±0.15±0.3±0.8±1.5
over 120 up to 400±0.2±0.5±1.2±2.5
over 400 up to 1000±0.3±0.8±2.0±4.0
over 1000 up to 2000±0.5±1.2±3.0±6.0
over 2000 up to 4000-±2.0±4.0±8.0
EXTERNAL RADII AND CHAMFER HEIGHTS
Permissible deviationsf (fine)Tolerance classv (very coarse)
in mm for ranges indesignation (description)
nominal lengthsm (middle)c (coarse)
0.5 up to 3±0.2±0.2±0.4±0.4
over 3 up to 6±0.5±0.5±1.0±1.0
over 6±1.0±1.0±2.0±2.0
ANGULAR DIMENSIONS
Permissible deviationsf (fine)Tolerance classv (very coarse)
in degrees and minutesdesignation (description)
for ranges in nominal 
lengthsm (middle)c (coarse)
up to 10±1º±1º±1º30'±3º
over 10 up to 50±0º30'±0º30'±1º±2º
over 50 up to 120±0º20'±0º20'±0º30'±1º
over 120 up to 400±0º10'±0º10'±0º15'±0º30'
over 400±0º5'±0º5'±0º10'±0º20'

GENERAL TOLERANCES FOR FORM AND POSITION (DIN ISO 2768 T2)

STRAIGHTNESS AND FLATNESS
Ranges in nominalTolerance class
lengths in mmHKL
up to 100.020.050.1
over 10 up to 300.050.10.2
over 30 up to 1000.10.20.4
over 100 up to 3000.20.40.8
over 300 up to 10000.30.61.2
over 1000 up to 30000.40.81.6
PERPENDICULARITY
Ranges in nominalTolerance class
lengths in mmHKL
up to 1000.20.40.6
over 100 up to 3000.30.61
over 300 up to 10000.40.81.5
over 1000 up to 30000.50.82
SYMMETRY
Ranges in nominalTolerance class
lengths in mmHKL
up to 1000.50.60.6
over 100 up to 3000.50.61
over 300 up to 10000.50.81.5
over 1000 up to 30000.512
RUN-OUT
Tolerance class
HKL
0.10.20.5

All dimensions in mm

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