impacter

or im·pac·tor

[im-pak-ter]

noun

a person or thing that impacts.

Origin of impacter

First recorded in 1915–20; impact + -er1

impact wrench

noun

an electric or pneumatic power wrench with interchangeable toolhead attachments, used for installing and removing nuts, bolts, and screws.
Also called impacter, impactor.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019