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Bolt Torque Information

Bolts should be tightened using the following torques as a guide and with well lubricated threads.

Convert To Metric Units
Nominal Size
(inches)
1 1 1/2 2 2 1/2 3 4 5 6 8 10 12
Flange Bolt
Torque, ft.-lbs.*
10 15 25 30 40 30 40 60 75 70 75
No. of Holes
per Flange
4 4 4 4 4 8 8 8 8 12 12
*Note: The values in this table are a guide. In some instances, higher torque may be required. However, excessive torque should be avoided. Do not exceed twice the given values.
Bolt Torque Sequence