Screws: Shear vs. bending vs..... pullout??
"Existential Angst" wrote in message
...
... So what's the diff between "tightening" a g-d screw, and
"pre-tensioning" it??
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EA
You tighten to a head torque, pretension to a stress level in the bolt
shank and threads which can be measured as elongation if both ends are
accessible. The difference is compensating for friction.
jsw
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