Rag Joint Bolts

[mjproduct]

Hi - Does anyone have or know where to find the bolts for the rubber rag joints? Most posts are about sourcing the actual round rubber piece - but I need just the bolts. Or, what replacement bolts would work?

Most of the parts vendors I've contacted only have the rubber coupler. It's for a 73 RR but I think they are fairly generic between cars/trucks.

Thanks!