DEWALT 20V MAX* 1/4 in. Brushless Cordless Impact Driver (Tool Only) (DCF840B)

Price: $129.00 - $99.00
(as of Sep 30, 2026 22:04:39 UTC – Details)


Drive screws and other fasteners with this high-output 20V MAX* 1/4 in. Brushless Cordless Impact Driver that was engineered to be lightweight for ease of use without sacrificing performance. The brushless motor delivers up to 1,700 in-lb of torque and up to 3,200 rpm for driving large-diameter screws. The compact design provides optimized maneuverability and access to confined areas when performing cabinetry and framing jobs. Maintain productivity in low-light spots with a 3-LED on-board work light that illuminates dimly lit workspaces.
HIGH-PERFORMANCE BRUSHLESS MOTOR delivers 1,700 in-lb of torque and 3,200 rpm to drive large-diameter screws
MANEUVER WITH EASE: Compact design for optimized ergonomics and access to difficult-to-reach spots
PRO-LEVEL CONTROL and precision with variable speed trigger
BRIGHTEN DARK WORK AREAS: Integrated 3-LED work light enhances visibility in low-light spaces
Customers find the impact driver extremely powerful, with one mentioning it’s strong enough to run 6″ Timberlocks. The tool is compact and durable, with one customer noting they expect to use it for many years. They also appreciate its functionality and consider it good value for money.