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Definition of "Pilot Hole" |
A pilot hole is either small hole drilled into a material to guide a larger drill to the appropriate location and ease the job of the larger drill, to allow for the insertion of another hole making tool, such as a knockout punch, that will produce the final size hole, or, in wood or plastic, to locate, guide, and provide clearance for a self threading screw to prevent damaging the material or breaking the screw. |
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