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Carbon Steel - Tensile Proof Stress Of Metric Bolt and Screw
Indicated stresses in Newton/mm2
| Strength Designation |
3.6 |
4.6 |
4.8 |
5.6 |
5.8 |
6.8 |
8.8
=< 16mm |
8.8
> 16 |
9.8 |
10.9 |
12.9 |
| Nom. Tensile Strength |
300 |
400 |
400 |
500 |
500 |
600 |
800 |
800 |
900 |
1000 |
1200 |
| Min Tensile Strength |
330 |
400 |
420 |
500 |
520 |
600 |
800 |
830 |
900 |
1000 |
1200 |
| Lower Yield Stress |
180/190 |
240 |
320/340 |
300 |
400/420 |
480 |
- |
- |
- |
- |
- |
| Stress at Perm. Set |
- |
- |
- |
- |
- |
- |
640 |
640/660 |
720 |
900/940 |
1080/100 |
In accordance with BS 3692:2001 and BS EN IOS 898-1 : 1999
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