how can I repair my patio chair bottoms?

The bottom of the chairs have a fastener on them that I don't think I can replace. I have thought about another screw and bolt to hold the bar together after I replace the material on the seat itself. Any ideas?

seandogue8 years ago
Carriage bolts have a smooth profile and are suitable for areas where there will be skin contact.
orksecurity8 years ago
Photo? Hard to be sure which type you have, or which fastener you're worried about, or whether it's necessary to unfasten it at all...