back taper


Definition of back taper

: a slight relief on a tap or drill causing it to have a larger diameter at the point than at the shank

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First Known Use of back taper

1941, in the meaning defined above

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The first known use of back taper was in 1941

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Cite this Entry

“Back taper.” Dictionary, Merriam-Webster, Accessed 21 Oct. 2021.

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