I am currently working on a paint job for the bumpers on my pickup and had to grind some of the bolts that had seized at the corner mounts.
I still have the brackets, though the Toyota part number for these includes the bolts. It looks like one is shorter than the other.
The brackets are about $25 each with bolts included but would rather simply find the bolts.
Do these round headed bolts have a name for the possibility of sourcing generic parts.

 

Just use a regular bolt of the same size and length