Tolerancias

ISO 286-2 Round Bar Tolerances

ROUND STEEL ISO TOLERENCE “h SERIES” IN MILLIMETERS
NOMINAL SIZE DIAMETER mm
1 to 3 Over 3 to 6 Over 6 to 10 Over 10 to 18 Over 18 to 30 Over 30 to 50 Over 50 to80 Over 80 to 120 Over 120 to 180 Over 180 to 250

h5
-0.004 -0.005 -0.006 -0.008 -0.009 -0.011 -0.013 -0.015 -0.018 -0.02

h6
-0.006 -0.008 -0.009 -0.011 -0.013 -0.016 -0.019 -0.022 -0.025-0.029

h7
-0.01 (-0.00039”) -0.012 (-0.00047”) -0.015 (-0.00059”) -0.018 (-0.00071”) -0.021 (-0.00083”) -0.025 (-0.00098”) -0.03 (-0.00118”) -0.035 (-0.00138”) -0.04 (-0.00158”) -0.046 (-0.00181”)h8
-0.014 -0.018 -0.022 -0.027 (-0.0010”) -0.033 -0.039 -0.046 -0.054 -0.063 -0.072

h9
-0.025 -0.03 -0.036 -0.043 -0.052 -0.062 -0.074 -0.087 -0.1 -0.115

h10
-0.04 -0.048 -0.058 -0.07 -0.084-0.1 -0.12 -0.14 -0.16 -0.185

h11
-0.06 -0.075 -0.09 -0.11 -0.13 -0.16 -0.19 -0.22 -0.25 -0.29

h12
-0.100 -0.120 -0.150 -0.18 -0.210 -0.250 -0.300 -0.350 -0.400 -0.460

(-0.00016”)(-0.00024”) (-0.00020”) (-0.00032”) (-0.00024”) (-0.00035”) (-0.00032”) (-0.00043”) (-0.00035”) (-0.00051”) (-0.00043”) (-0.00063”) (-0.00051”) (-0.00075”) (-0.00059”) (-0.00087”) (-0.00071”) (-0.00098”)(-0.00079”) (-0.00114”)

(-0.00055”) (-0.00098”) (-0.00158”) (-0.00071”) (-0.00118”) (-0.00189”) (-0.00086”) (-0.00142”) (-0.00228”) (-0.00169”) (-0.00275”)

(-0.00236”) (-0.00394”) (-0.00295”)(-0.00472”) (-0.00354”) (-0.00591”) (-0.00433”) (-0.00709”) (-0.00512”) (-0.00827”) (-0.00630”) (-0.00984”) (-0.00748”) (-0.01181”) (-0.00866”) (-0.01378”) (-0.00984”) (-0.01575”) (-0.01142”) (-0.01811”)(-0.00129”) (-0.00205”) (-0.00331”) (-0.00153”) (-0.00244”) (-0.00393”) (-0.00181”) (-0.00291”) (-0.00472”) (-0.00213”) (-0.00343”) (-0.00551”) (-0.00248”) (-0.00393”) (-0.00629”) (-0.00283”) (-0.00453”)(-0.00723”)

Tolerances are all plus 0mm, - mm size. Parenthetical numbers indicate “inches.” Refer to the above chart for the following example: Example: a 20mm Round h9 will have a tolerance...