|
Registered
Join Date: May 2000
Location: Los Alamos, NM, USA
Posts: 6,044
|
"The torque is more important than the stretch."
No, stretch is a much better and direct method of determining correct bolt or stud tension. The amount of the applied torque that manifests as tension is very dependent on highly variable thread and bearing (bearing at the nut/bolt/washer contact face) friction. Friction depends on fastener/thread materials including plating, surface finish, thread clearances and lubrication. Compounding this uncertainty there is also the variability of the torque wrench output/reading.
|