What are you going to use for a pin in the hinge that had the bolt in it?
If you feel that you must use a bolt with that hinge, use a grade 8 bolt and make sure that the holes are snug for the pin. The original and replacement pins are as hard as woodpecker lips so that they will last longer. Make sure to clear the oil hole in the hinge straps and oil them on a regular basis. All of our sagging door issues are due to the fact that no one ever oiled them.
