I verified the thread size is 5/16", 24 thread count. Be sure to use WD-40 or some other lubricant on both surfaces. I ran a tap through the welded nuts that are affixed to the hood that couples with the hinges. And installed the new hinge hardware bolts. Just be careful not to go in to hard and reverse the tap periodically before proceeding forward. Snapping off a tap in the nut assembly is not even an option.