Use a Screw Extractor To Remove A Stripped Screw

The most appropriate tool for removing a  stripped   screw, assuming the screw head is worn but intact, is named a "screw extractor". This is basically a screwdriver or screwdriver bit which has strong, rough metal threads in the middle of the tip. These are generally meant to burrow directly into metal of the  screw head and get stuck there so you can put some torque listed.

A  screw extractor works  just like a normal screwdriver to remove the stripped screw. Be sure you go slowly, and press down hard with the screw extractor, press  hard enough to prevent slippage so you can grip and engage the stripped screw.

Sometimes the screw extractor  cannot get a grip, in this case you may have to drill a small hole straight into the screw head. You'll need a drill bit that really is created for drilling metal; a wood-drilling bit won't survive. Be careful! If you drill exceedingly far, you will destroy the head entirely or make it fragile enough that it will snap off, so it is even harder to get the screw out.

With the nature of the items you might be drilling, pieces  of the metal screw  may suddenly come flying away from the screw, so wear eye protection!

Also if your having trouble getting traction with the  try utilizing a small section of steel wool by  pressing a tiny piece into screw head, press the extractor in and turn

You can also use a multi spline screw extractor. The multi-spline extractor is similar to a hex nut with "teeth" inside of it, it works on the outside of the screw instead of the inner part . The multi-spline extractor fits in the head of one's screw and over any projecting stud. The inside splines (teeth) engage the rounded head of the  screw. Tap the extractor gently in order and convert it utilizing a socket wrench. The multi-spline extractor works for Torx and Allen head screws if the cylindrical body of an Allen screw is exposed. The multi-spline extractor is usually described as "Bolt extractor 5-piece set".