Grade 10.9 Bolts 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

Bolt Loading Capacities. Non-preloaded Ordinary Bolts. Grade 10.9 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 47.2 59.0 33.7 67.4 33.0 39.6 46.2 52.8 59.4 66.0 79.2 99.0 132 165 198
16 157 87.9 110 62.8 126 44.0 52.8 61.6 70.4 79.2 88.0 106 132 176 220 264
20 245 137 172 98.0 196 55.0 66.0 77.0 88.0 99.0 110 132 165 220 275 330
22 303 170 212 121 242 60.5 72.6 84.7 96.8 109 121 145 182 242 303 363
24 353 198 247 141 282 66.0 79.2 92.4 106 119 132 158 198 264 330 396
27 459 257 321 184 367 74.3 89.1 104 119 134 149 178 223 297 371 446
30 561 314 393 224 449 82.5 99.0 116 132 149 165 198 248 330 413 495

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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