Hi Gtlts!
Welcome to the forum.I'm sure you'll find everything you need here,and probably a lot of stuff you don't need but want!
Chainring bolts are the bolts used to fix chainrings to the cranks.Sounds like you may be looking for the bolts for swingarm or frame linkages.If you post a pic that will help a lot.We thrive on pics here!
May be a difficult thing to source if they are unusual dimensions.Some such bolts can be bespoke to the frame so only available if someone has trashed/stripped one.Could be the reason for someone fitting incorrect ones,if the originals were damaged.
Always possible someone out there can tell you exactly what you need.Plenty of experience/helpful advice on here as you may have found already.I'm sure someone will know.