Must... Display... Patience...
What bolts?
U-Bolts?
Shackle bolts?
Whenever I need to replace a bolt, I go to the hardware store (or an industrial supply/steel sales store) and search for Grade 10 Metric bolts that match what I took off the truck and brought with me.
If I can't find what I want locally, then it's off to one of the fabulous vendors that advertise here at ZookiWorld!
My apologies, I am working on 3 hours of sleep - temporary shift change at work.