DEWALT DCF921B Impact Wrench
The DEWALT DCF921B Impact Wrench is a compact and powerful cordless fastening tool designed for automotive repair, construction work, and mechanical maintenance. Part of the DEWALT ATOMIC™ compact series, this impact wrench delivers strong torque performance in a lightweight design that allows easy maneuverability in tight workspaces.
Engineered for demanding fastening applications, the DEWALT DCF921B Impact Wrench delivers up to 300 ft-lbs of maximum fastening torque and 450 ft-lbs of maximum breakaway torque. This level of power allows users to remove stubborn bolts and tighten fasteners efficiently across a wide range of applications.
The compact body design makes the DEWALT DCF921B Impact Wrench ideal for working in confined areas such as engine compartments, equipment assemblies, and structural installations where larger tools cannot easily reach.
For improved control and versatility, the tool features four selectable speed settings. These allow users to adjust performance for different fastening tasks while maintaining precision and preventing damage to fasteners.
The built-in Precision Wrench™ control helps prevent overtightening during fastening and reduces fastener run-off when loosening bolts. Additionally, the tool includes Timber Screw™ mode, which optimizes performance when driving large fasteners into wood.
An integrated LED work light provides visibility when working in dimly lit environments, while the 1/2-inch hog ring anvil allows quick and secure socket changes for improved productivity.
Powered by the DEWALT 20V MAX battery platform, the DEWALT DCF921B Impact Wrench offers cordless convenience and compatibility with all DEWALT 20V MAX batteries and chargers. Battery and charger are sold separately.
Key Features
- High Torque Performance: Up to 300 ft-lbs fastening torque.
- Breakaway Torque: Up to 450 ft-lbs for removing stubborn fasteners.
- ATOMIC™ Compact Design: Lightweight build for improved maneuverability.
- 4 Speed Settings: Allows control for a wide range of fastening tasks.
- Precision Wrench™ Mode: Helps prevent overtightening and fastener run-off.
- Timber Screw™ Mode: Optimized performance when driving large screws into wood.
- 1/2 Inch Hog Ring Anvil: Enables quick and secure socket changes.
- LED Work Light: Improves visibility in dark or confined spaces.
- 20V MAX Battery Platform: Compatible with all DEWALT 20V MAX batteries.
Technical Specifications
| Specification | Details |
|---|---|
| Model | DCF921B |
| Product Type | Cordless Compact Impact Wrench |
| Drive Size | 1/2 Inch |
| Series | ATOMIC™ |
| Max Fastening Torque | 300 ft-lbs |
| Max Breakaway Torque | 450 ft-lbs |
| Speed Settings | 4 |
| Control Modes | Precision Wrench™ & Timber Screw™ |
| Anvil Type | Hog Ring |
| Lighting | LED Work Light |
| Power Source | 20V MAX Battery |
| Battery Compatibility | All DEWALT 20V MAX Batteries |
| Configuration | Tool Only (Battery & Charger Sold Separately) |
What’s Included
- (1) DEWALT DCF921B Impact Wrench
- (1) Belt Clip
Ideal Applications
- Automotive repair and tire service
- Mechanical maintenance and assembly
- Construction fastening
- Equipment installation and servicing
The DEWALT DCF921B Impact Wrench combines ATOMIC™ compact design, strong torque output, and advanced fastening control features, making it an excellent tool for professionals who need power and maneuverability for demanding fastening applications.
Available at ToolKing.com for professional-grade cordless power tools.











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