Compared to a lag bolt with a very fine thread, would a drywall screw of the same length with a coarse thread require
fewer turns to drive into a hole> more turns to drive into a hole
A B
The trade-off when the threads are closer together, is that more turns of the screw or bolt are needed to do the job because the distance over which the input force must be applied is greater.
number of turns required to move the screw
closer
more
MORE
MORE
number of threads on a screw
more
fewer
thread
turns
turns
turns