I'm retired, so sometime I spend more time on a project than it deserves. I countersunk the holes in the loader: Used the torch to anneal the hardened edge where the bolts will go, drilled and threaded: Then used flat head socket bolts: Ground the bottom of the bolts off flush. Smooth on the bottom, smooth on the top. One of the dumb farm-boy tricks I used is to liberally coat all the mating surfaces, and the threads with silicone sealer. Might act a little like removable loctite, but mainly to seal everything so it is not a rusted mess in 10 years. If the silicone is there, water is not.