Tech Tip: A calibrated torque device must be used to achieve proper torque specs

July 13, 2015
Proper torquing requires using the correct tools, procedures and patterns.

OEM torque specifications can be found in the vehicle's owner's manual, shop repair manual, industry reference guides, or obtained from the vehicle dealer. The following may serve as a general guide. However, keep in mind that the proper torque range is determined by the stud diameter, and will follow in the below examples:

Stud Diameter Torque Range (ft/lbs)
12mm 75-85
14mm 85-95
7/16" 70-80
1/2" 75-85
9/16" 105-115
5/8" 125-135

Proper torquing requires using the correct tools, procedures and patterns to prevent over/under tightening hardware, stripping threads and stretching studs, as well as reducing the possibility of warping brake drums, brake rotors or suspension hubs.

Torque sticks are designed to limit applied torque by absorbing input torque through torsion deflection, or twist. However, there are many variables that can affect the torsional deflection (absorbed torque) and the applied (delivered) torque. These can lead to inaccurately applied torque or variations in applied torque.

Information provided by: ACDelco Auto & Equipment Tools

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