DEWALT DCF840B 20V MAX* Brushless 1/4 in. Impact Driver (Bare Tool)
By DeWalt
SKU DCF840B
Model Number: DEWDCF840B
Availability Notice:
Availability to purchase does not guarantee immediate stock. Our site displays items we stock along with items we have the access to source for our customers. Some items may have extended lead times. Questions about availability? Contact our team before ordering.
Unleash Jobsite Power: DEWALT 20V MAX* Brushless Impact Driver DCF840B
Built for the demands of the modern jobsite, the DEWALT DCF840B 20V MAX* Brushless 1/4 in. Impact Driver delivers uncompromising performance in a lightweight, compact package. General contractors and serious DIYers will appreciate its high-performance brushless motor, designed to power through large-diameter fasteners with 1,700 in-lbs of torque and 3,200 RPM. This tool is engineered for efficiency, helping you maintain productivity from rough-ins to finishing touches, ensuring every drive is confident and precise.
- /High-Performance Brushless Motor: Experience extended run time, increased power, and exceptional durability for tackling tough fastening applications all day long.
- /Robust 1,700 in-lbs of Torque: Drive lag screws, anchor bolts, and larger fasteners with ease, ensuring solid connections and reducing rework.
- /Compact & Ergonomic Design: At just 5.1 inches front-to-back and weighing 1.95 lbs (tool only), this impact driver offers superior maneuverability in tight spaces without sacrificing power.
- /Integrated 3-LED Work Light: Illuminate dimly lit work areas for enhanced visibility and precision, keeping you productive regardless of ambient light conditions.
- /Variable Speed Trigger: Gain pro-level control and precision, adapting power output to the application for optimal results and preventing over-tightening.
Technical Specifications
| Voltage | 20V MAX* |
| Motor Type | Brushless |
| Drive Size | 1/4 in. Hex |
| Max Torque | 1,700 in-lbs |
| No-Load Speed | 0-3,200 RPM |
| Impacts Per Minute | 0-4,200 IPM |
| Tool Length | 5.1 in. (129 mm) |
| Tool Weight (bare tool) | 1.95 lbs |
| LED Work Light | Yes, 3-LED Integrated |
| Variable Speed | Yes |
What's In The Box
The DEWALT DCF840B is sold as a bare tool, providing flexibility for those who already own DEWALT 20V MAX* batteries and chargers.
- /(1) DEWALT DCF840B 20V MAX* Brushless 1/4 in. Impact Driver
- /(1) Belt Hook
*Battery and charger sold separately.
