impacter

or im·pac·tor

[im-pak-ter]

Origin of impacter

First recorded in 1915–20; impact + -er1

impact wrench

noun
  1. 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. 2018