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May 24 2007, 11:44 AM EDT msnyder
 
 edit 32 words added
Change: A shallow, conical hole in a workpiece that matches the shape of a flathead screwhead. When used without a counterbore, it positions the head flush with the surrounding surface, shown above.   View changes from previous version. (Word count: 31)
May 24 2007, 11:43 AM EDT msnyder
 
 create No content added or deleted.