Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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A/T Torque Data


Torque Specifications:





How To Determine Bolt Strength (Standard Bolt):





Specified Torque For Standard Bolts:





How To Determine Nut Strength:





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

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

Example: Bolt = 4T
Nut = 4N or more