I have a Craftsman model 917289223 mower and the front mount for the deck recently fell off when I ran over a tree root. All the parts are still there and look OK, but I am missing a bolt which holds the front mounting bracket in place and need information on the size and thread pattern for this bolt so I can replace it.

In the picture below, the area labeled C is the nut that adjusts the height of the front of the deck. If you look at the picture, the piece of metal that nut is butted up against is what I am calling the front mounting bracket. It's a piece of metal about 6" long by maybe 4" wide. There's a slot in the front axle housing that it slides up into and then there is a bolt that goes through it to hold it in place. That's the bolt I am looking for info on.

I checked on SearsPartsDirect and couldn't even find this bracket on any of the diagrams, so there was no info on ordering a replacement bolt.

I can't really see into the area where the bolt goes too well so I am not sure if the threading is stripped. If it is, what would be the best way to repair this type of issue?