buttress thread

noun

Definition of buttress thread

: a screw thread in which the driving face is made perpendicular to the axis of the screw (as in a square thread) while the back face makes an angle with the axis (as in a V thread) in order to combine efficiency in the transmission of power with strength

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“Buttress thread.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/buttress%20thread. Accessed 14 May. 2021.

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