Allen screw
noun
a screw turned by means of an axial hexagonal hole in its head.
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Origin of Allen screw
Formerly a trademark
Words nearby Allen screw
Allende Gossens, Allende meteorite, Allende, Salvador, Allen key, Allen Park, Allen screw, Allen's law, Allen's rule, Allen test, Allentown, Allen, Woody
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020