wnjj wrote:
Yes, it does matter.
Yep. And one of the easiest ways to understand why is to consider what happens with a torque screwdriver, where you twist directly over where the torque is measured. Put a crowfoot type extension on a screwdriver, and you'll never apply any torque to the fastener because you only end up trying to push it sideways, not rotate it. (You can apply torque to the fastener by pushing the screwdriver sideways, but that isn't measured as torque and if you do that, you can also torque the fastener while applying no torque to the screwdriver). Similar thing with wrenches, although less intuitive - the effective torque depends on how far from the measurement force is applied.