DEWALT DCF921B Atomic 20V Max 1/2 in Impact Wrench
- Item Torque: 150 ft-lb
- Head Style: Square Drive
- Operation Mode: Battery
- Measurement Standard: SAE (Inch)
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A lighter 2.8 pound entry in DEWALT's 20V impact lineup, sold bare and best suited to buyers who already own compatible batteries.
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ASIN: B09M3TL9BBModel: DCF921BCategory: Impact Drivers & Wrenches
Overview
Weighing in at 2.8 pounds, the DCF921B is DEWALT's lighter bare-tool entry in the 20 volt impact lineup, sold without a battery or charger included.
At 2.8 pounds this is noticeably lighter than DEWALT's DCF892B in the same 20V impact family, which weighs 4.2 pounds, making the DCF921B the better fit where reach and reduced arm fatigue matter more than raw bulk. It draws from the same 20V MAX battery platform, so it only makes sense to buy bare if you already own compatible batteries.
- 20 volt cordless platform
- 2.8 pound tool weight
- Bare tool, battery sold separately
- DEWALT DCF921B model
Who it's for
Users already on DEWALT's 20V MAX platform who want a lighter impact tool for overhead work or tight spaces. Skip it if you need a complete kit with battery and charger included.
Pros and cons
- 2.8 pounds, lighter than similar 20V impacts
- Fits existing 20V MAX battery investment
- Bare tool, no battery or charger included
Performance notes
The lighter 2.8 pound body reduces fatigue during overhead or repetitive work compared to heavier impact tools in the same line, though as with any bare tool, actual output depends on the battery pack used with it.
Specifications
| Brand | DeWALT |
|---|---|
| Model | DCF921B |
| Dimensions & fit | |
| Item Weight | 2.8 poundshigher than 51% of 184 impact drivers & wrenches |
| Item Length | 9.2 incheshigher than 51% of 128 impact drivers & wrenches |
| Capacity & performance | |
| Jaw Capacity | 0.5 inches |
| Power & efficiency | |
| Voltage | 20 voltshigher than 54% of 171 impact drivers & wrenches |
| Construction & materials | |
| Material Type | Blend |
| Color | Black, Yellow |
| Finish Types | Powder Coated |
| Included components | |
| Unit Count | 1 |
| Included Components | (1) DCF921 Impact Wrench; (1) Belt Clip |
| Package Quantity | 1 |
| Other details | |
| Item Torque | 150 ft-lblower than 63% of 116 impact drivers & wrenches |
| Head Style | Square Drive |
| Operation Mode | Battery |
| Measurement Standard | SAE (Inch) |
| End Style | Socket End |
| Is Racheting | Yes |
| Is Non Sparking | No |
| Item Type Name | Impact Wrench |
Closest rivals on specs
QWORK WD4742 Air Ratchet Wrench 3/8 Inch- Item Torque 150 vs 65 ft-lb (+131%)
Frequently asked questions
How much does the DEWALT DCF921B weigh?
2.8 pounds, lighter than DEWALT's DCF892B at 4.2 pounds.
Does the DCF921B come with a battery?
No, it is sold as a bare tool.
What voltage platform is the DCF921B built on?
DEWALT's 20 volt system.