BS EN 14399-3 System HR - Proof Load values for Nuts
| Thread d |
Nominal stress area of standard test mandarel (mm^2) |
Property Class 8 (N) |
Property Class 10 (N) |
|---|---|---|---|
| M12 | 84.3 | 84300 | 97800 |
| M16 | 157 | 157000 | 182100 |
| M20 | 245 | 245000 | 284200 |
| M22 | 303 | 303000 | 351200 |
| M24 | 353 | 353000 | 409500 |
| M27 | 459 | 459000 | 532400 |
| M30 | 561 | 561000 | 650800 |
| M36 | 817 | 817000 | 947700 |
The Proof Load values are based on stress of 1000 MPa for property class 8; and 1160 MPa for property class 10. Tolerance class 6H or 6AZ.
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