Not sure what you're looking for here. What model are you building? The callouts are on the plans. Just go down to the store and buy the closest similar bolt, spin it around on a grinder a bit to remove the threads and slap that baby in there! That's for the wing spar. Or are you talking about the line of bolts in the longeron? I'm not sure why'd you'd need to make a mockup of that but it sounds like you're not talking bout a "7" or a "9"
