Round, Hexagon and Square Bar Tolerances

round-bar

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

square-bar

Examples of our Products