Round, Hexagon and Square Bar Tolerances
| 
| ISO Tolerances for Round, Hexagon & Square Bar | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| (h Tolerances are minus; k Tolerances and plus) - all dimensions in mm | ||||||||||
|
Diameter/Across Flats/Square
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
16
|
|
1 to 3mm
|
.004
|
.006
|
.010
|
.014
|
.025
|
.040
|
.060
|
.090
|
.140
|
|
|
>3 to 6mm
|
.005
|
.008
|
.012
|
.018
|
.030
|
.048
|
.075
|
.120
|
.180
|
.750
|
|
>6 to 10mm
|
.006
|
.009
|
.015
|
.022
|
.036
|
.058
|
.090
|
.150
|
.220
|
.900
|
|
>10 to 18mm
|
.008
|
.011
|
.018
|
.027
|
.043
|
.070
|
.110
|
.180
|
.270
|
1.100
|
|
>18 to 30mm
|
.009
|
.013
|
.021
|
.033
|
.052
|
.084
|
.130
|
.210
|
.330
|
1.300
|
|
>30 to 50mm
|
.011
|
.016
|
.025
|
.039
|
.062
|
.100
|
.160
|
.250
|
.390
|
1.600
|
|
>50 to 80mm
|
.013
|
.019
|
.030
|
.046
|
.074
|
.120
|
.190
|
.300
|
.460
|
1.900
|
|
>80 to 120mm
|
.015
|
.022
|
.035
|
.054
|
.087
|
.140
|
.220
|
.350
|
.540
|
2.200
|
|
>120 to 180mm
|
-
|
-
|
-
|
.063
|
.100
|
.160
|
.250
|
.400
|
.630
|
2.500
|
|
>180 to 250mm
|
-
|
-
|
-
|
.072
|
.115
|
.185
|
.290
|
.460
|
.720
|
2.900
|
|
>250 to 315mm
|
-
|
-
|
-
|
.081
|
.130
|
.210
|
.320
|
.520
|
.810
|
3.200
|
