Sometimes, when working on receptacles I run into stripped screw holes. These holes are built-in to the junction box which is made of plastic or some brownish and brittle material.
I suspect this was caused by someone trying to overcome a too-crowded (or poorly laid out) junction box by using these screws to force the receptacle into the box.
What is the solution without replacing the junction box?
Some years back, I picked up a really handy tool -- looks like a screwdriver, but with multiple taps --6-32, 8-32, and 10-32. Very easy to use for this sort of situation.
Over time, the plastic outlet boxes can become brittle and break, also inserting screws that are self tapping or drywall screws will cause the threads to strip and or crack and often prevent the outlet from seating flush. I am assuming that the existing box has adequate cubic inch rateing and is not overfilled.(you can't put one ton in a half ton truck).If the box is undersized, you will have to remove and replace it. If the box is not undersized you can try glue, expoxy,tape or a G-clip
inserting screws that are self tapping or drywall screws will cause the threads to strip and or crack and often prevent the outlet from seating flush.
Plastic electrical boxes suck! Not only do the screws strip, but in case of an overheated connection, the box will melt or burn. Nails can also be accidentally driven into them, which will short things out. I dont and wont use them. Metal boxes cost more, but last almost forever.
As far as your problem, take an extra long screw of the proper gauge, put a nut on it, and screw the nut all the way to the screw's head. Epoxy the screw in the plastic box, leaving 3/8 or 1/2 inch sticking out. When the epoxy is dry, saw off the screw head and remove that nut. Install the outlet and use the nut to attach it. (Same principal as a stud bolt). You may have to cut or file off more of that "stud" to make the cover plate fit.
replying to yeeha, noBS3 wrote: I flattened both sides of a round toothpick, then added a drop of Gorilla glue, and inserted the screw. It seemed to 'bite' well. I'll know for sure after the glue sets.
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