Stripped thread in a metal electric receptacle box? No problem when you own an electrical thread tool. You've got a screw loose? Now you can fix it. When electricians encounter a metal electrical box with stripped threads that will no longer hold the light switch or box-mounting screw, they don't simply get a larger screw and force it into the hole. Rather, they cut new threads with a handy little tool that at first glance looks like a screwdriver. It is a multi-tap threading device which cuts standard thread sizes that are typical for residential electrical work. Thus a stripped thread that was a 6-32 size can be tapped to an equally acceptable 8-32 thread (the next size up). Anyone who does a fair amount of home wiring or who has a "screw loose" should have one in their toolbox. You'll find it in hardware stores like True Value (www.truevalue.com). And that's the On The House tip for today.