How To Determine Nut Strength

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

Nut Type

Fig 1: Nuts Specification Chart

G05772823

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 greater) as the bolt strength classification number when tightening parts with a bolt and nut.

Example:

Bolt = 4T
Nut = 4N or more