Just as the title says. Is there some sort of hobby screw assortment that has "most" of the screws to fit our trains?
Certainly I can buy a hundred screws for the same price of 10 from Lionel.
My head starts spinning when trying to find the correct sizes on Amazon and other vendors. Much of what is offered comes in lengths far too long for O guage.
A recommendation of a "specific kit/ set" (if there is one) would help.