Something I find very handy and saves a great deal of money on screws is my screw drawer.
I dismantle a great deal of furniture and when I do this I keep all the screws and other misc. hardware.
All the screws go to the screw drawer where I have an old cookie sheet that spreads them out.
When I need screws for another project I can simply search back and forth over the tray
and find what I need.