Jan 4 2002
|
Nominal Bar Size (mm)
|
Tolerance Number
|
|
01
|
0
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
|
up to 3
|
0.3
|
0.5
|
0.8
|
1.2
|
2
|
3
|
4
|
6
|
10
|
14
|
25
|
40
|
60
|
100
|
140
|
250
|
400
|
600
|
|
over 3 to 6
|
0.4
|
0.6
|
1
|
1.5
|
2.5
|
4
|
5
|
8
|
12
|
18
|
30
|
48
|
75
|
120
|
180
|
300
|
480
|
750
|
|
over 6 to10
|
0.4
|
0.6
|
1
|
1.5
|
2.5
|
4
|
6
|
9
|
15
|
22
|
36
|
58
|
90
|
150
|
220
|
360
|
580
|
900
|
|
over 10 to 18
|
0.5
|
0.8
|
1.2
|
2
|
3
|
5
|
8
|
11
|
18
|
27
|
43
|
70
|
110
|
180
|
270
|
430
|
700
|
1100
|
|
over 18 to 30
|
0.6
|
1
|
1.5
|
2.5
|
4
|
6
|
9
|
13
|
21
|
33
|
52
|
84
|
130
|
210
|
330
|
520
|
840
|
1300
|
|
over 30 to 50
|
0.6
|
1
|
1.5
|
2.5
|
4
|
7
|
11
|
16
|
25
|
39
|
62
|
100
|
160
|
250
|
390
|
620
|
1000
|
1600
|
|
over 50 to 80
|
0.8
|
1.2
|
2
|
3
|
5
|
8
|
13
|
19
|
30
|
46
|
74
|
120
|
190
|
300
|
460
|
740
|
1200
|
1900
|
|
over 80 to 120
|
1
|
1.5
|
2.5
|
4
|
6
|
10
|
15
|
22
|
35
|
54
|
87
|
140
|
220
|
350
|
540
|
870
|
1400
|
2200
|
|
over 120 to 180
|
1.2
|
2
|
3.5
|
5
|
8
|
12
|
18
|
25
|
40
|
63
|
100
|
160
|
250
|
400
|
630
|
1000
|
1600
|
2500
|
|
over 180 to 250
|
2
|
3
|
4.5
|
7
|
10
|
14
|
20
|
29
|
46
|
72
|
115
|
185
|
290
|
460
|
720
|
1150
|
1850
|
2900
|
|
over 250 to 315
|
2.5
|
4
|
6
|
8
|
12
|
16
|
23
|
32
|
52
|
81
|
130
|
210
|
320
|
520
|
810
|
1300
|
2100
|
3200
|
|
over 315 to 400
|
3
|
5
|
7
|
9
|
13
|
18
|
25
|
36
|
57
|
89
|
140
|
230
|
360
|
570
|
890
|
1400
|
2300
|
3600
|
|
over 400 to 500
|
4
|
6
|
8
|
10
|
15
|
20
|
27
|
40
|
63
|
97
|
155
|
250
|
400
|
630
|
970
|
1550
|
2500
|
4
|
Tolerance values given in microns = x0.001 mm
H = all minus. For example, 25.40mm diameter bar to h9 = + Nil, -0.052mm
j = equal. For example, 38.10mm hexagonal bar to j10 = + 0.050mm,-0.050mm
k = all plus. For example, 160mm hot rolled bar to k14 = + 1.000mm, - Nil