pilot hole
McGraw-Hill Science & Technology Dictionary:
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pilot hole
(′pī·lət ′hōl)
(design engineering) In metal-forming operations, a prepunched hole in a metal strip into which the pilot component of the die enters in order to assure precise registration of the strip at each work station.
(engineering) A small hole drilled ahead of a larger borehole.
(mechanical engineering) A hole drilled in a piece of wood to serve as a guide for a nail or a screw or for drilling a larger hole.
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A hole which serves as a guide for a nail or screw, or for drilling a larger-size hole.
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McGraw-Hill Science & Technology Dictionary
McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.
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