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Loading Capacities BS449: Bolt Grade 10.9

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Structural Stress Deflection Calculators, Equations

Loading Capacities of Ordinary Bolts per. BS449: Part 2 Bolt Grade 10.9

Related: Method and Equations of Analysis BS449: Part 2

Dia.
mm
Tensile
Area
mm2
Tension
Capacity Pt
@
350 N/mm2
Shear
Capacity
@
233 N/mm2
Bolt Grade = 10.9
Bearing Capacity of Bolts in kN for End Distance >= 2d
Bolt Bearing Strength = 730 N/mm2
Ply Bearing Strength: = 250 N/mm2
Bearing (Ply) Thickness Passed Through, mm
Shank
kN
Threads
kN
Single
kN
Double
kN
5
mm
6
mm
7
mm
8
mm
9
mm
10
mm
12.5
mm
15
mm
20
mm
25
mm
M 1.6
1.27
0.704
0.445
0.468
0.936
2.0
2.4
2.8
3.2
3.6
4.0
5.0
6.0
8.0
10.0
M 2
2.07
1.1
0.725
0.732
1.464
2.5
3.0
3.5
4.0
4.5
5.0
6.3
7.5
10.0
12.5
M 2.5
3.39
1.72
1.19
1.14
2.28
3.1
3.8
4.4
5.0
5.6
6.3
7.8
9.4
12.5
15.6
M 3
5.03
2.47
1.76
1.65
3.3
3.8
4.5
5.3
6.0
6.8
7.5
9.4
11.3
15.0
18.8
M 4
8.78
4.4
3.07
2.93
5.86
5.0
6.0
7.0
8.0
9.0
10.0
12.5
15.0
20.0
25.0
M 5
14.2
6.87
4.97
4.57
9.14
6.3
7.5
8.8
10.0
11.3
12.5
15.6
18.8
25.0
31.3
M 6
20.1
9.9
7.04
6.59
13.18
7.5
9.0
10.5
12.0
13.5
15.0
18.8
22.5
30.0
37.5
M 8
36.6
17.6
12.8
11.7
23.4
10.0
12.0
14.0
16.0
18.0
20.0
25.0
30.0
40.0
50.0
M 10
58
27.5
20.3
18.3
36.6
12.5
15.0
17.5
20.0
22.5
25.0
31.3
37.5
50.0
62.5
M 12
84.3
39.6
29.5
26.4
52.8
15.0
18.0
21.0
24.0
27.0
30.0
37.5
45.0
60.0
75.0
(M 14)
115
53.9
40.3
35.9
71.8
17.5
21.0
24.5
28.0
31.5
35.0
43.8
52.5
70.0
87.5
M 16
157
70.4
55
46.8
93.6
20.0
24.0
28.0
32.0
36.0
40.0
50.0
60.0
80.0
100.0
(M 18)
192
89.1
67.2
59.3
118.6
22.5
27.0
31.5
36.0
40.5
45.0
56.3
67.5
90.0
112.5
M 20
245
110
85.8
73.2
146.4
25.0
30.0
35.0
40.0
45.0
50.0
62.5
75.0
100.0
125.0
(M 22)
303
133
106.1
88.6
177.2
27.5
33.0
38.5
44.0
49.5
55.0
68.8
82.5
110.0
137.5
M 24
353
158.3
123.6
105.4
210.8
30.0
36.0
42.0
48.0
54.0
60.0
75.0
90.0
120.0
150.0
(M 27)
459
200.4
160.7
133.4
266.8
33.8
40.5
47.3
54.0
60.8
67.5
84.4
101.3
135.0
168.8
M 30
561
247.4
196.4
164.7
329.4
37.5
45.0
52.5
60.0
67.5
75.0
93.8
112.5
150.0
187.5
(M 33)
694
299.4
242.9
199.3
398.6
41.3
49.5
57.8
66.0
74.3
82.5
103.1
123.8
165.0
206.3
M 36
817
356.3
286
237.2
474.4
45.0
54.0
63.0
72.0
81.0
90.0
112.5
135.0
180.0
225.0
(M 39)
976
418.1
341.6
278.3
556.6
48.8
58.5
68.3
78.0
87.8
97.5
121.9
146.3
195.0
243.8
M 42
1120
484.9
392
322.8
645.6
52.5
63.0
73.5
84.0
94.5
105.0
131.3
157.5
210.0
262.5
(M 45)
1300
556.7
455
370.6
741.2
56.3
67.5
78.8
90.0
101.3
112.5
140.6
168.8
225.0
281.3
M 48
1470
633.3
514.5
421.6
843.2
60.0
72.0
84.0
96.0
108.0
120.0
150.0
180.0
240.0
300.0
(M 52)
1760
743.3
616
494.8
989.6
65.0
78.0
91.0
104.0
117.0
130.0
162.5
195.0
260.0
325.0
M 56
2030
862.1
710.5
573.9
1147.8
70.0
84.0
98.0
112.0
126.0
140.0
175.0
210.0
280.0
350.0
(M 60)
2360
989.6
826
658.8
1317.6
75.0
90.0
105.0
120.0
135.0
150.0
187.5
225.0
300.0
375.0
M 64
2680
1125.9
938
749.6
1499.2
80.0
96.0
112.0
128.0
144.0
160.0
200.0
240.0
320.0
400.0
(M 68)
3060
1271.1
1071
846.2
1692.4
85.0
102.0
119.0
136.0
153.0
170.0
212.5
255.0
340.0
425.0

Notes:

Font/Color Key:
(Red): Bearing Critical;
(Black): Bearing > Single Shear;
(Green): Bearing > Double Shear

Sizes given within (brackets) are non-preferred

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