Screws and Bolts up to M6
| Type |
Grade |
Nominal Size |
Property Class |
| 50 |
70 |
80 |
| Minimum Breaking Torque N/mm² |
| Austenitic |
A1 A2 A4 |
M1.6 |
0.15 |
0.2 |
0.27 |
| M2 |
0.3 |
0.4 |
0.56 |
| M2.5 |
0.6 |
0.9 |
1.2 |
| M3 |
1.1 |
1.6 |
2.1 |
| M4 |
2.7 |
3.8 |
4.9 |
| M5 |
5.5 |
7.8 |
10 |
Screws, Bolts and Nuts from M6
| Type |
Grade |
Property Class |
Nominal Size |
Bolts and Screws |
Nuts |
| Minimum Tensile Strength N/mm² |
Minimum Proof Stress N/mm² |
Minimum Elongation at fracture mm |
Proof Load Stress (sp) N/mm² |
| Austenitic |
A1 A2 A4 |
50 |
M6 - M39 |
500 |
210 |
0.6 x Nom. Dia. |
500 |
| 70 |
M6 - M20 |
700 |
450 |
0.4 x Nom. Dia. |
700 |
| 80 |
M6 - M20 |
800 |
600 |
0.3 x Nom. Dia. |
800 |
Note: Due to the fact that fastening applications differ greatly, the above information is for guidance only and is correct to the best of our knowledge. The customer must satisfy themselves with the performance of the fastener and validity of the data. TR Fastenings will not be held responsible for any failure that may occur from the use of this information.