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Old 10-30-2021, 11:42 AM
Dave Neptune Dave Neptune is offline
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The torque values between fine and coarse threads is far different for the same clamping pressure.

A stud with coarse or fine threads at "BOTH" ends can easily be swapped out for a bolt but not recommended.

Most stud applications are of a course thread in the block and a fine thread for the torqueing. The clamping pressure is greater for a given torque value than the "same" torque value on a course thread due to the greater leverage of the finer thread.

I have seen a few heads come loose because they torqued the coarse bolt at the same torque value as the fine threaded end they replaced by using a coarse bolt loosing valuable CLAMPING pressure.

Dave Neptune
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