How To Determine Nut Strength
WARNING: This page is about a different variant/trim than selected.
NUT TYPE
| Present Standard Hexagon Nut | Old Standard Hexagon Nut | Class | |
|---|---|---|---|
| Cold Forging Nut | Cutting Processed Nut | ||
|
No Mark |
- | - | 4N |
|
No Mark (w/ Washer) |
No Mark (w/ Washer) |
No Mark |
5N (4T) |
| - | - | 6N | |
| - | 7N (5T) | ||
| - | - | 8N | |
|
No Mark |
10N (7T) | ||
| - | - | 11N | |
| - | - | 12N | |
HINT:
- *: Nut with 1 or more marks on one side surface of the nut.
- Use a nut with the same nut strength classification number (or more) as the bolt strength classification number when tightening parts with a bolt and nut.
Example:
- Bolt = 4T
- Nut = 4N or more