[WILMASBOYL78]

I called both places and neither of the sales reps. knew the answer...the Corvette place sent me to their tech line...just got a voice mail...Ground Up guy placed me on hold and asked someone...he tells me the bolts have a knurl on them that secures them in place to facilitate tightening the nut...he also said they carry the actual rivets if you are going that route.

***the knurls don't seem to be shown in the website photos for the item

Tom from the Tech Dept.