| ISO
METRIC SOCKET HEAD CAP SCREWS 
Applicable Specification:
BS4168
Din 912
ISO 4762
BS6104 Grade 12.9
ISO 898/1 Grade 12.9
Dimensions and Tightening Torques - ISO
Metric Threads
Nom.
Thread
Size |
Pitch |
A
Max. |
B
Max. |
da
Max. |
H
Max. |
W
Nom. |
L
Nom. |
Length
Of
Thread
T |
Typical
Tightening Torques |
Induced Load
|
Unplated |
Cadmium Plated |
Nm |
Ibf.
In |
Nm |
Ibf.in. |
N |
Ibf. |
M3
M4
M5 |
0.5
0.7
0.8 |
5.50
7.00
8.50 |
3.00
4.00
5.00 |
3.60
4.70
5.70 |
3.00
4.00
5.00 |
2.5
3.0
4.0 |
20
25
25 |
18
20
22 |
2.45
5.59
11.28 |
22
49
100 |
1.96
4.22
8.53 |
17
37
76 |
4,021
6,963
11,474 |
902
1,562
2,574 |
M6
M8
M10 |
1.0
1.25
1.50 |
10.00
13.00
16.00 |
6.0
8.0
10.0 |
6.80
9.20
11.20 |
6.00
8.00
10.0 |
5.0
6.0
8.0 |
30
35
40 |
24
28
32 |
19.12
46.09
92.18 |
169
408
816 |
14.71
36.28
91.59 |
130
321
633 |
16,132
29,616
47,268 |
3,619
6,644
10,604 |
M12
(M14)
M16 |
1.75
2.00
2.00 |
18.00
21.00
24.00 |
12.00
14.00
16.00 |
14.20
16.20
18.20 |
12.00
14.00
16.00 |
10.0
12.0
14.0 |
45
55
55 |
36
40
44 |
158.87
254.97
387.36 |
1,406
2,256
3,428 |
122.58
196.13
304.00 |
1,085
1,736
2,691 |
68,745
94,536
129,938 |
15,422
21,200
29,150 |
(M18)
M20
(M22) |
2.50
2.50
2.50 |
27.00
30.00
33.00 |
18.00
20.00
22.00 |
20.20
22.40
24.40 |
18.00
20.00
22.00 |
14.0
17.0
17.0 |
60
65
70 |
48
52
56 |
534.46
750.21
1059.12 |
4,730
6,640
9,574 |
421.68
598.20
794.34 |
3,732
5,294
7,031 |
157,887
202,948
253,992 |
35,400
45,540
57,000 |
M24
M27
M30 |
3.00
3.00
3.50 |
36.00
40.00
45.00 |
24.00
27.00
30.00 |
26.40
30.40
33.40 |
24.00
27.00
30.00 |
19.0
19.0
22.0 |
80
90
90 |
60
66
72 |
1294.47
1912.29
2588.95 |
11,458
16,926
22,915 |
1019.89
1529.84
2079.00 |
9,027
13,541
18,402 |
282,431
385,401
468,758 |
63,360
86,460
105,160 |
M33
M36
M42 |
3.50
4.00
4.50 |
50.00
54.00
63.00 |
33.00
36.00
42.00 |
36.40
39.40
45.60 |
33.00
36.00
42.00 |
24.0
27.0
32.00 |
100
110
120 |
78
84
96 |
3540.20
4520.86
7217.69 |
31,335
40,015
63,885 |
2824.31
3618.65
5766.31 |
24,998
32,029
51,038 |
584,476
685,485
942,419 |
131,120
153,780
211,420 |
All dimensions in millimetres
Sizes in brackets are non-preferred.
Notes:
1. Thread Class - 5g, 6g.
2. da - Transition diameter
3. Working Temperature - -50oC,
+300oC
Material - High Grade Alloy Steel
Tensile Strength - 1240 MPa (1,274 n/mm2) Minimum
Shear - 744 MPa (765 N/mm2)
0.2% Proof Stress - 1115 MPa (1,147 N/mm2)
Elongation % on GL5.65 (square root) A=9% here A=cross-sectional area
OTHER SIZES AND THREAD FORMS AVAILABLE
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