Can you use any bmx stem on any fork?

Answer 1

only if the stem will work for the fork there are two kinds of forks 1 inch have what is called a goose neck stem. which you can find some low end mountain bikes and also little kids bikes. then there's the regular stem which has to be tighten down on the fork itself it doesn't go into like on the goose neck stems but if you get the right stem for the right fork it will work if you still don't understand my explanation theres alot of bike shops that will also show you the difference

Answer 2

Yes you can unless its 1 1/8

Mostly had 1 1/8 onto threadless fork

I used to have these that can fit .