[RainyEyes]

Depending on how much gap there is between the thread and the newly formed hole you're going to want to fill it with something and retap it.

If the rmr mount is made of plastic, get some jb plastic weld and fill up that hole. Regular jb weld if it's metal. Afterwards, drill it to the proper size and retap it with the thread that came loose. Sand and clean as necessary.

To properly secure that thread apply some JB weld to lock it in and fill air bubbles once you're ready to adhere the thread to the plate.

This is if you never ever want it falling off again.