Allowable pressure in threads of connection bolts.
|
Nut material |
Strength class of bolt material according to the CSN and ISO standards |
|||||||||
|
4A |
4D |
4S |
5D |
5S |
6S |
6G |
8G, 8E |
10K, 10G |
12K |
|
|
3.6 |
4.6 |
4.8 |
5.6 |
5.8 |
6.8 |
6.9 |
8.8 |
10.9 |
12.9 |
|
|
pA [MPa] |
||||||||||
|
steel |
40 |
50 |
75 |
70 |
90 |
110 |
120 |
150 |
200 |
250K |
|
gray cast iron |
25 |
30 |
45 |
40 |
55 |
70 |
80 |
90 |
125 |
150 |
|
light alloys |
18 |
20 |
30 |
27 |
35 |
45 |
50 |
60 |
80 |
90 |