How To Determine Nut Strength

Nut Type

Fig 1: Nut Standard Chart

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HINT:

*: 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:

Bolt = 4T
Nut = 4N or more