Standards and grades
Property class 10.9 bolts: strength, use and class 10 nut
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Property class 10.9 raises the nominal tensile strength to 1000 MPa and the yield strength to 900 MPa. It is chosen when the joint needs more preload with the same thread size or when the calculation requires it.
It is combined with a class 10 nut. Available in DIN 931 and DIN 933.
| Property class | Tensile strength | Yield strength | Nut |
|---|---|---|---|
| 8.8 | 800 MPa | 640 MPa | Class 8 |
| 10.9 | 1000 MPa | 900 MPa | Class 10 |
| 12.9 | 1200 MPa | 1080 MPa | Class 12 |