So this is a screw press used to hmm disconnect the clamp connection (sorry if these are not the correct terms I really don't know how to translate it properly). Anyway, I think it's obvious what this is used for to anyone familiar with the matter.
I need to draw the detail A
There's a big discussion among my friends on how it's supposed to be drawn. There are two options shown on the picture below, which one is correct?
Obviously, I used green color for the screw and red color for the nut.
Those who think case no 1 is correct, think that that screw teeth press upwards because of the reactive force that the clamp connection is giving.
Those who support the case no 2 think that since you are 'pushing' the inside of the clamp connection downward, then the teeth of the screw also push down on the nut teeth.