Bolt Loading Capacities Ordinary Bolts. Grade 4.6 Bolts

Engineering ISO Metric Hardware Design Data
Engineering ANSI Hardware Design Data

See Explanatory notes given below table. BS 5950-1: 2000 BS 4190: 2001

Bolt Loading Capacities. Non-preloaded Ordinary Bolts. Grade 4.6 Bolts per. S355

Diameter
of
Bolt
Tensile
Stress
Area
At
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

Exact
At pt

Single
Shear
Double
Shear
Pnom
Pt
Ps
2 Ps
mm
mm²
kN
kN
kN
kN
5
6
7
8
9
10
12
15
20
25
30
12
84.3
16.2
20.2
13.5
27.0
27.6
33.1
38.6
44.2
49.7
55.2
66.2
82.8
110
138
166
16
157
30.1
37.7
25.1
50.2
36.8
44.2
51.5
58.9
66.2
73.6
88.3
110
147
184
221
20
245
47.0
58.8
39.2
78.4
46.0
55.2
64.4
73.6
82.8
92.0
110
138
184
230
276
22
303
58.2
72.7
48.5
97.0
50.6
60.7
70.8
81.0
91.1
101
121
152
202
253
304
24
353
67.8
84.7
56.5
113
55.2
66.2
77.3
88.3
99.4
110
132
166
221
276
331
27
459
88.1
110
73.4
147
62.1
74.5
86.9
99.4
112
124
149
186
248
311
373
30
561
108
135
89.8
180
69.0
82.8
96.6
110
124
138
166
207
276
345
414

Non-preloaded Ordinary Bolts

  • Values in bold are less than the single shear capacity of the bolt.
  • Values in italic are greater than the double shear capacity of the bolt.
  • Bearing values assume standard clearance holes.
  • If oversize or short slotted holes are used, bearing values should be multiplied by 0.7.
  • If long slotted or kidney shaped holes are used, bearing values should be multiplied by 0.5.
  • If appropriate, shear capacity must be reduced for large packings, large grip lengths and long joints.

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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