[J Witt]

Another, smaller, caveat is that carriage bolts are generally of low grade steel and not suitable for safety installation purposes like seat belts. Most organizations that regulate such things like to see minimum SAE Grade 5 hardware.

Most of these regulations for commercial vehicles and aircraft have been paid for by sometimes bitter experience. While there are no regulations as such that I know of for our hobby cars, one should use the real world experience of others as good advice.

John