To add to the good advice by Russ. ideally you want a bolt with a large
underhead bearing area & correct grip length. Also make sure that the register
back of wheel & rear of crank is pefectly clean & flat, & make sure there are
no raised spots around bolt hole chamfer. Also make sure that the locating
dowel is a tight fit in the wheel, the fasteners clamp the wheel, the dowel
the shear load. If the wheel is loose on the dowel the bolts will be subject
to shear load & they WILL fail!