DEWALT DCF921B Atomic 20V Max 1/2 in Impact Wrench
- 1800 inch pounds torque
- 20 volts, battery operated
- 0.5 inch jaw capacity
- Square drive, socket end, SAE
- 9.2 inches long, 2.8 pounds
- Ratcheting listed
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A cordless impact wrench with a square drive and a powder coated body, sold as the wrench alone. It is not a spark-free tool.
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ASIN: B09M3TL9BBModel: DCF921BCategory: Impact Drivers & Wrenches
Overview
A tire shop bay or a garage floor is where this impact wrench works hardest. The square drive and socket end take SAE sockets, and the body has a black and yellow powder coated finish.
The reason to buy is high torque in a manageable length.
Who it's for
A mechanic with DEWALT batteries on hand who removes lug nuts and chassis bolts. A buyer without batteries should plan the extra purchase.
Pros and cons
- Powder coated body
- Battery not included
- Inch standard only
Performance notes
A hammer and anvil mechanism delivers repeated torque bursts, breaking stuck fasteners without much reaction. Real output depends on the battery and a snug socket.
Specifications
| Brand | DeWALT |
|---|---|
| Model | DCF921B |
| Dimensions & fit | |
| Item Length | 9.2 incheslower than 50% of 111 impact drivers & wrenches |
| Item weight | 2.8 pounds |
| Capacity & performance | |
| Jaw Capacity | 0.5 inches |
| Power & efficiency | |
| Voltage | 20 voltshigher than 54% of 135 impact drivers & wrenches |
| Construction & materials | |
| Color | Black, yellow |
| Finish Types | Powder coated |
| Material Type | Blend |
| Included components | |
| Included Components | Impact wrench |
| Unit Count | 1.0 Count |
| Other details | |
| Item Torque | 1800 inch pounds |
| Head Style | Square drive |
| Operation Mode | Battery |
| Measurement Standard | SAE (inch) |
| End Style | Socket end |
| Is Racheting | Yes |
| Is Non Sparking | No |
Closest rivals on specs
Frequently asked questions
Is the DEWALT DCF921B an impact driver?
No. The item type is impact wrench, with a square drive and socket end.
Does the DEWALT DCF921B include a battery?
No. The included components list only the impact wrench.
Is the DEWALT DCF921B non-sparking?
No. Non sparking is listed as No.