Thanks guys.
I suppose, the easiest thing to do is to check/measure the length of each type of bolt.
I have both, alloy on 1 car, steel on the other. But I will replace the steel rims soon.

My primary concern was about the so called "spherical" section that mates with the seat for the bolt in the rim. But that doesn't seem to be a problem.
It's the length that matters. I got it, so I will measure them.