On Mon, 28 Aug 2006 23:38:45 -0700, "John" wrote:

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?

Oversized self tapping screw or sheet metal screw.