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⚡ Drive Your Projects Forward with Power and Precision!
The DEWALT 20V MAX* 1/4 in. Brushless Cordless Impact Driver (DCF840B) combines a high-performance brushless motor delivering up to 1,700 in-lb of torque and 3,200 rpm with a compact, ergonomic design. Its variable speed trigger ensures precise control, while the integrated 3-LED work light enhances visibility in low-light conditions. Perfect for professionals seeking cordless power and maneuverability in cabinetry, framing, and general fastening tasks.
| Additional Features | Variable Speed |
| Amperage | 15 A |
| Asin | B09MLL4G3G |
| Best Sellers Rank | #12,172 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #10 in Power Impact Drivers |
| Brand Name | DEWALT |
| Color | Yellow |
| Customer Reviews | 4.6 4.6 out of 5 stars (251) 4.6 out of 5 stars |
| Drill Type | Impact Driver |
| Drilling Capacity Metal | 0.24 inches |
| Drilling Capacity Wood | 0.25 inches |
| Included Components | Tool,Belt Hook |
| Item Type Name | Impact Driver |
| Item Weight | 0.27 g |
| Manufacturer | DEWALT |
| Manufacturer Part Number | DCF840B |
| Manufacturer Warranty Description | Manufacturer Warranty |
| Material Type | Blend, Metal |
| Maximum Power | 300 watts |
| Maximum Rotational Speed | 3200 rpm |
| Maximum Torque | 1700 in-lb |
| Model Number | DCF850B |
| Number Of Items | 1 |
| Power Source | Battery Powered |
| Speed | 3200 rpm |
| Torque | 1700 in-lb |
| Upc | 885911725927 |
| Voltage | 20 |
User
Great simple drill
Dewalt does it again. Great long lasting drill.
User
Excellent tool and priced right 👍
I like DeWalt cordless tools. Batteries are easy to get and after market ones are very affordable. This tool is compact and powerful. I'm replacing an older 18 volt that still works just wanted to replace it before it gives out.
User
It's a Dewalt so it's a quality tool.
I own many Dewalt tools, and all have been tough and dependable including this impact driver.
User
Best value gun on the market, hands down. Prove me wrong.
Best gun under $200. Period.This is the only impact my crew uses, has been for three years now. Fast on decking, lightweight even with a 10ah pack, powerful enough to run 6" Timberlocks like nothing.
User
DEWALT
This driver is very compact,and has plenty of torque. Only thing missing is a variable torque adjustment.
User
Small, yet powerful!
I just received this Impact Driver less than an hour ago..got some 2.5 inch deck screws and tested out the power of the drill by running in a few screws into a 2x4, this little thing works like a Beast! Powerful, yet compact! As for the durability, can't comment on that yet since I just got it..may change my review score if long term use shows otherwise..but as for right now, this thing is 5 star!
User
THE correct product
good product still works
User
Muy bueno
Excelente
User
Dcf840
Excelente, me encantó, buena herramienta, velocidad variable en el gatillo, muy cómodo, super recomendado.
User
Works perfect
Love Dewalt! Second driver bought due to big deck project.I find Dewalt fits my hands nicely
Trustpilot
3 weeks ago
5 days ago