A power tool that is capable of more reliably keeping a torque at a constant is provided. An adjustment member (42) is provided with: an engagement hole (42f) that is detachably attached to the adjustment member (42), and serves as an engagement part that engages with a torque adjustment device that serves as a clutch handle for rotating the adjustment member (42); and a lid (60) that is attached to an opening (13a) in such a manner as to cover the engagement hole (42f).
