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Countersunk Bolt Grade 10.9 Loading Capacities Table
Engineering ISO Metric Hardware Design Data
Engineering ANSI Hardware Design Data
See Explanatory notes given below table. BS 5950-1: 2000 BS 4190: 2001, BS 4933
Countersunk Bolt Loading Capacities Grade 10.9 Table
Non-Preloaded Countersunk Bolts
Grade 10.9 Countersunk Bolts material S355
Diameter
of Bolt mm |
Tensile
Stress Area A t mm² |
Tension
Capacity |
Shear
Capacity |
Bearing Capacity in kN
(Minimum of Pbb and Pbs ) End distance equal to 2 x bolt diameter Thickness in mm of material passed through |
||||||||||||
Nominal
0.8 At pt P nom kN |
Exact
At pt Pt kN |
Single
Shear Ps kN
|
Double
Shear 2 Ps kN |
5
|
6
|
7
|
8
|
9
|
10
|
12
|
15
|
20
|
25
|
30
|
||
12
|
84.3
|
47.2
|
59.0
|
33.7
|
67.4
|
13.2
|
19.8
|
26.4
|
33.0
|
39.6
|
46.2
|
59.4
|
79.2
|
112
|
145
|
178
|
16
|
157
|
87.9
|
110
|
62.8
|
126
|
8.80
|
17.6
|
26.4
|
35.2
|
44.0
|
52.8
|
70.4
|
96.8
|
141
|
185
|
229
|
20
|
245
|
137
|
172
|
98.0
|
196
|
0
|
11.0
|
22.0
|
33.0
|
44.0
|
55.0
|
77.0
|
110
|
165
|
220
|
275
|
22
|
303
|
170
|
212
|
121
|
242
|
0
|
6.05
|
18.2
|
30.3
|
42.4
|
54.5
|
78.7
|
115
|
175
|
236
|
296
|
24
|
353
|
198
|
247
|
141
|
282
|
0
|
0
|
13.2
|
26.4
|
39.6
|
52.8
|
79.2
|
119
|
185
|
251
|
317
|
27
|
459
|
257
|
321
|
184
|
367
|
0
|
0
|
3.71
|
18.6
|
33.4
|
48.3
|
78.0
|
123
|
197
|
271
|
345
|
30
|
561
|
314
|
393
|
224
|
449
|
0
|
0
|
0
|
8.25
|
24.8
|
41.3
|
74.3
|
124
|
206
|
289
|
371
|
The tensile stress area (At ) is obtained from standards
The tension capacity of the bolt is given by:
Pnom = 0.8ptAt Nominal
Pt = ptAt Exact
Where:
pt is the tension strength of the bolt.
The shear capacity of the bolt is given by
PS = ps As
where:
ps is the shear strength of the bolt
As is the shear area of the bolt.
In the table, As has been taken as equal to At .
The shear capacity given in the tables must be reduced for large packings, large grip lengths, kidney shaped slots or long joints when applicable.
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