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Tolerence Chart for SS Round Bars as per ASTM A 484
Size Range in inch
Tolerence
1/16" to less than 5/16"
+/-0.001"
5/16" to less than 1/2"
+/-0.0015"
1/2" to less than 1"
+/-0.002"
1" to less than 1-1/2"
+/-0.0025"
1-1/2" to less than 4"
+/-0.003

Cold finished Hexagon and Square Bars
Size Range in inch
Tolerence
1/16" to less than 5/16"
+/-0.002"
5/16" to less than 1/2"
+/-0.003"
1/2" to less than 1"
+/-0.004"
1" to less than 2"
+/-0.006"
2" to less than 3"
+/-0.008"
3" and over
+/-0.010"

Tolerence chart for SS Round Bars as per ISO
Size Range (mm)
h8
h9
h10
h11
h12
h13
k12/k13
Upto 6
-0.018
-0.030
-0.048
-0.075
-0.120
-0.180
-
Over 6 upto 10
-0.022
-0.036
-0.058
-0.090
-0.150
-0.220
-
Over 10 upto 18
-0.027
-0.043
-0.070
-0.110
-0.180
-0.270
-
Over 18 upto 30
-0.033
-0.052
-0.084
-0.130
-0.210
-0.330
+0.10/+0.15
Over 30 upto 50
-0.039
-0.062
-0.100
-0.160
-0.250
-0.390
+0.15/+0.20
Over 50 upto 80
-0.046
-0.074
-0.120
-0.190
-0.300
-0.460
+0.20/+0.25
Over 80 upto 120
-0.054
-0.087
-0.140
-0.220
-0.350
-0.540
+0.25/+0.30