The Steel Supply Company

Buyers Guide

Metric Tolerance Designations – English Equivalents Part 1

 

  Nominal dia. in mm
Tolerance
Zone
Deviation Over 6
incl. 10
Over 10
incl. 18
Over 18
incl. 30
Over 30
incl. 40
Over 40
incl. 50
Over 50
incl. 65
Over 65
incl. 80
Over 80
incl. 100
a12 upper -0.0110 -0.0011 -0.0118 -0.0122 -0.0126 -0.0134 -0.0142 -0.0150
a12 lower -0.0170 -0.0185 -0.0201 -0.0220 -0.0224 -0.0252 -0.0260 -0.0287
a13 upper -0.0110 -0.0114 -0.0118 -0.0122 -0.0126 -0.0134 -0.0142 -0.0150
a13 lower -0.0197 -0.0228 -0.0248 -0.0276 -0.0280 -0.0315 -0.0323 -0.0362
c12 upper -0.0031 -0.0037 -0.0043 -0.0047 -0.0051 -0.0055 -0.0059 -0.0067
c12 lower -0.0091 -0.0108 -0.0126 -0.0146 -0.0150 -0.0173 -0.0181 -0.0205
d6 upper -0.0016 -0.0020 -0.0026 -0.0031 -0.0031 -0.0039 -0.0039 -0.0047
d6 lower -0.0019 -0.0024 -0.0031 -0.0039 -0.0039 -0.0047 -0.0047 -0.0056
e6 upper -0.0010 -0.0013 -0.0016 -0.0020 -0.0020 -0.0024 -0.0024 -0.0028
e6 lower -0.0013 -0.0017 -0.0021 -0.0027 -0.0027 -0.0031 -0.0031 -0.0037
e7 upper -0.0010 -0.0013 -0.0016 -0.0020 -0.0020 -0.0024 -0.0024 -0.0028
e7 lower -0.0016 -0.0020 -0.0024 -0.0030 -0.0030 -0.0035 -0.0035 -0.0042
e12 upper -0.0010 -0.0013 -0.0016 -0.0020 -0.0020 -0.0024 -0.0024 -0.0028
e12 lower -0.0069 -0.0083 -0.0102 -0.0118 -0.0118 -0.0142 -0.0142 -0.0166
f5 upper -0.0005 -0.0007 -0.0008 -0.0010 -0.0010 -0.0012 -0.0012 -0.0014
f5 lower -0.0007 -0.0009 -0.0011 -0.0014 -0.0014 -0.0017 -0.0017 -0.0020
f6 upper -0.0005 -0.0006 -0.0008 -0.0010 -0.0010 -0.0012 -0.0012 -0.0014
f6 lower -0.0009 -0.0011 -0.0013 -0.0016 -0.0016 -0.0019 -0.0019 -0.0023
f7 upper -0.0005 -0.0006 -0.0008 -0.0010 -0.0010 -0.0012 -0.0012 -0.0014
f7 lower -0.0011 -0.0013 -0.0016 -0.0020 -0.0020 -0.0024 -0.0024 -0.0028
g5 upper -0.0002 -0.0002 -0.0003 -0.0004 -0.0004 -0.0004 -0.0004 -0.0005
g5 lower -0.0004 -0.0006 -0.0006 -0.0008 -0.0008 -0.0009 -0.0009 -0.0011
g6 upper -0.0002 -0.0002 -0.0003 -0.0004 -0.0004 -0.0004 -0.0004 -0.0005
g6 lower -0.0006 -0.0007 -0.0008 -0.0010 -0.0010 -0.0011 -0.0011 -0.0013
g7 upper -0.0002 -0.0002 -0.0003 -0.0003 -0.0003 -0.0004 -0.0004 -0.0005
g7 lower -0.0008 -0.0009 -0.0011 -0.0013 -0.0013 -0.0016 -0.0016 -0.0019
All tolerances listed to the plus (+) side unless indicated with a minus (-) sign.

 

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