I can't tell what size they are from the picture but they look like maybe fork drain bolts or plugs of some kind to me.
I was thinking it looked like it might have a groove under the head for a o-ring. It's a 10mm dia x 10mm length.
Drain plug ? Now I'm nervous,,,lol. My elderly neighbor wanted to help me take it apart. When he came up with those and couldn't remember where they came from I said I'll do it by myself because I need to remember how it goes back together,,,lol. I'm hoping they were just extra's laying in the fairing pocket or storage area left over from the po.
Nothing is leaking so I guess I'm all right. Thanks