DEWALT DCF520B Impact
- Impact
- 20 volts
A 20V DeWalt impact wrench sold tool-only, worth it mainly for buyers who already have DeWalt 20V batteries and a charger.
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How it ranks among the 284 impacts we track
4.4★ across 22 Amazon ratings, Bayesian-smoothed toward the category average.
22 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
100+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 284 impacts we track - how the scorecard works · full impacts data report. Confidence: limited - limited rating history.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
DeWalt's DCF520B is a 20V impact wrench sold as a bare tool, meaning the box holds the wrench itself with no battery or charger included. It is built for driving lug nuts, bolts, and other large fasteners that need repeated rotational force.
DeWalt's 20V MAX line shares one battery platform across dozens of tools, so this impact wrench likely fits batteries and chargers you may already own if you use other DeWalt 20V gear. Because the listing only confirms voltage and the bare-tool naming pattern, exact torque and impacts-per-minute figures are not given here. Anyone buying it as their only 20V tool will need a battery and charger separately.
- 20V voltage rating
- DeWalt bare-tool B suffix, no battery included
- 4.4 star rating from 22 reviews
- About 100 bought in the past month
Who it's for
Fits someone already invested in DeWalt's 20V MAX battery system who needs an impact wrench for automotive or heavy fastening work. Less useful for a first-time cordless tool buyer with no compatible battery on hand.
Strengths and trade-offs
Drawn from this product's published specifications.
- Runs on DeWalt's shared 20V MAX platform
- Rated 4.4 stars across reviews
- Suited to lug nuts and heavy fasteners
- Sold as bare tool, no battery or charger
- Torque output not stated in listing
Performance notes
An impact wrench like the DCF520B works by hammering out short bursts of torque instead of applying constant twisting force, which is what makes it effective on rusted or over-tightened lug nuts. Output should scale with the 20V battery's amp hours, though the listing itself does not publish a torque figure.
Specifications
| Brand | DeWALT |
|---|---|
| Model | DCF520B |
| Voltage | 20 volts |
Other DeWALT impacts
How it compares
This product against the closest alternatives we track in impacts.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| DEWALT DCF520B ImpactThis product | 4.4 / 5 | 22 | 2.7 / 5 |
| Milwaukee 2457-20 ImpactMILWAUKEE | 4.6 / 5 | 8,078 | 4.5 / 5 |
| GEARWRENCH 81270 ImpactGEARWRENCH | 4.7 / 5 | 4,983 | 4.4 / 5 |
| AOBEN AB7331T ImpactAOBEN | 4.4 / 5 | 10,707 | 4.4 / 5 |
| Ryobi P235A ImpactRyobi | 4.7 / 5 | 4,700 | 4.4 / 5 |
Similar impacts from other brands
Questions about the DeWALT DCF520B
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the DCF520B include a battery and charger?
No. The B in DCF520B follows DeWalt's convention for a bare tool, so battery and charger are sold separately.
What voltage does the DCF520B run on?
It runs on DeWalt's 20V platform, per the listing.
Will it work with other DeWalt 20V MAX tools' batteries?
It should share DeWalt's 20V MAX battery platform, though check compatibility for your specific battery model before buying.