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Message: <blockquote data-quote="JasonLester" data-source="post: 242492" data-attributes="member: 7501">I doubt they are supposed to snap off. The reason I say this is then the snapped off part would be in the way and how would you have a hole in the metal for the screw to tap. I believe the tip just acts as a drill and cuts wood and metal. The wood is sort of tapped by the tread but because the metal takes longer to drill it cleans/stripps that thread out of the wood allowing it to pull the wood and metal together after you get into the metal. ...I used these (or something similar) on an old camper I had. They worked pretty good. Saves the time of switching bits and drilling each hole and then putting each screw in. But its not as easy as just putting in a screw...</blockquote>