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 59501: 2000 BS 4190: 2001
Bolt Loading Capacities. Nonpreloaded Ordinary Bolts. Grade 10.9 Bolts per. S355
Diameter
of Bolt 
Tensile
Stress Area A_{t} 
Tension
Capacity 
Shear
Capacity 
Bearing Capacity in kN (Minimum of P_{bb} and P_{bs}) Thickness in mm of material passed through 

Nominal
0.8 A_{t} p_{t} 
Exact 
Single
Shear 
Double
Shear 

P_{nom}

P_{t}

P_{s}

2 P_{s}


mm 
mm^{2} 
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 
Nonpreloaded 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 (A_{t} ) is obtained from standards
The tension capacity of the bolt is given by:
P_{nom} = 0.8p_{t}A_{t} Nominal
P_{t} = p_{t}A_{t} Exact
Where:
p_{t} is the tension strength of the bolt.
The shear capacity of the bolt is given by
P_{S} = p_{s} A_{s}
where:
p_{s} is the shear strength of the bolt
A_{s} 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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