TABLE 4 & 5
BOLT INFORMATION 1.6 0.35 1.373 1.171 1.27 3.2 12 1.75 10.863 9.853 84.3 19 36 4 33.402 31.093 817 55 1.6 0.2 1.470 1.355 1.57 3.2 12 1.25 11.188 10.466 92.1 19
A guide to specifying
Torque Techinacal
Information 
torque values for fasteners
continued...
TABLE 4 ISO METRiC COARSE
THREADS
Nominal Thread Diameter mm
Pitch of the Thread mm
Pitch Diameter d2 mm
Minor Diameter d3 mm
Nominal Stress Area mm2
Hexagon A/F Size mm
2
2.5
3
4
5
6
8
10
0.4
0.45
0.5
0.7
0.8
1
1.25
1.5
1.740
2.208
2.675
3.545
4.480
5.350
7.188
9.026
1.509
1.948
2.387
3.141
4.019
4.773
6.466
8.160
2.07
3.39
5.03
8.78
14.2
20.1
36.6
58.0
4
5
5.5
7
8
10
13
17
14
16
18
20
22
24
27
30
33
2
2
2.5
2.5
2.5
3
3
3.5
3.5
12.701
14.701
16.376
18.376
20.376
22.051
25.051
27.727
30.727
11.546
13.546
14.933
16.933
18.933
20.319
25.706
28.706
115
157
192
245
303
353
459
561
694
22
24
27
30
32
36
41
46
50
39
42
45
48
52
56
60
64
68
4
4.5
4.5
5
5
5.5
5.5
6
6
36.402
39.077
42.077
44.752
48.752
52.428
56.428
60.103
64.103
34.093
36.479
39.479
41.866
45.866
49.252
53.252
46.639
60.639
976
1121
1306
1473
1758
2030
2362
2676
3055
60
65
70
75
80
85
90
95
100
Information
taken from BS3643:pt 1: 1981 & BS.3692: 1967
_____________________________________________________________
TABLE
5 ISO METRIC FINE THREADS
Nominal Thread Diameter mm
Pitch of the Thread mm
Pitch Diameter d2 mm
Minor Diameter d3 mm
Nominal Stress Area mm2
Hexagon A/F Size mm
2
2.5
3
4
5
6
8
10
0.25
0.35
0.35
0.5
0.5
0.75
1
1.25
1.838
2.273
2.773
3.675
4.675
5.513
7.350
9.188
1.693
2.071
2.571
3.387
4.387
5.080
6.773
8.466
2.45
3.70
5.61
9.79
16.1
22.0
39.2
61.2
4
5
5.5
7
8
10
13
17
14
16
18
20
22
24
27
30
33
1.5
1.5
1.5
1.5
1.5
2
2
2
2
13.026
15.026
17.026
19.026
21.026
22.701
25.701
28.701
31.701
12.160
14.160
16.160
18.160
20.160
21.546
24.546
27.546
30.546
125
167
216
272
333
384
496
621
761
22
24
27
30
32
36
41
46
50
Information
taken from BS3643:pt 1: 1981 & BS.3692:
1967
Contd.....
