I wouldn't worry about the supplied bolts. They'll be fine.
I once lifted the front of a Model A Ford off the ground with a single 3/8 bolt that I forgot to disconnect. It was in pure tension, as well which is likely the weakest position. There was absolutely no clamping force on it.
The reason everything comes from China now is they produce stuff with CHEAP labor.

Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.