I have this assembly I created for a Triclamp sight glass, but it needs bolts to run between the two flanges.

I know I could draw the bolts or use the toolbox, except I'm not quite sure how to use the toolbox to give me the bolts I need.

The physical part itself uses a rod that's threaded on both ends and bolted down with cap nuts.

Could someone be so kind as to show me how to use the toolbox or point me to a tutorial of some kind on it's basic use?