How To Determine Nut Strength

Nut Type

Present Standard Hexagon Nut

Old Standard Hexagon Nut

Class

Cold Forging Nut

Cutting Processed Nut

No Mark

4N

No Mark (w/ Washer)

©

N

o Mar

k

5N (4T)

6N

©

(Q)

—ô-i

7N (5T)

8N

© @

N

o Mar

k

10N (7T)

(o) ^

11N

© ©

• *: Nut with 1 or more marks on one side surface of the nut.

• Use the nut with the same number of the nut strength classification or greater than the bolt strength classification number when tightening parts with a bolt and nut.

Example:

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