DeWalt DCF850B 20V MAX ATOMIC 3-Speed 1/4 in. Impact Driver - Tool Only
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DeWalt 20V MAX ATOMIC 1/4 in. 3-Speed Impact Driver - Tool Only
The DeWalt DCF850B is a 20V MAX ATOMIC brushless impact driver, DeWalt's compact line built for tight framing bays, cabinets and other confined spaces. At less than 4 in. front to back, it delivers up to 1,825 in-lbs of max torque and up to 3,250 RPM across three speed settings, with a 1/4 in. quick-connect hex chuck and a 3-LED work light.
Bare tool only. No battery or charger is included. It runs on any DeWalt 20V MAX battery.
Features and Common Uses
- Brushless motor delivers up to 1,825 in-lbs of max torque and up to 3,800 impacts per minute
- Three speed settings up to 3,250 RPM match speed and torque to the fastener and material
- ATOMIC compact design, less than 4 in. front to back, for driving in tight framing bays and cabinetry
- 1/4 in. quick-connect hex chuck accepts standard impact-rated bits and sockets with no sleeve to retract
- Integrated 3-LED work light lights up dark work areas
Commonly used for:
- Driving screws in tight cabinetry, closets and framing bays
- General fastening on job sites where a full-size driver won't fit
- Installing hinges, cabinet hardware and trim fasteners
Specifications
| Brand | DeWalt |
|---|---|
| Model Number | DCF850B |
| Series | 20V MAX ATOMIC |
| Chuck | 1/4 in. quick-connect hex |
| Max Torque | 1,825 in-lbs |
| No-Load Speed | 0-3,250 RPM, 3-speed |
| Impact Rate | up to 3,800 IPM |
| Motor | Brushless |
| Weight | about 2 lb, bare tool |
| Length | less than 4 in., front to back |
| Work Light | 3-LED |
| Battery | 20V MAX, sold separately |
Torque, chuck, length and work-light figures are DeWalt's published specifications for the DCF850 ATOMIC platform; the exact weight and impact rate are not listed on DeWalt's own product page and are carried from Home Depot Canada's listing for the same SKU, flagged separately from the manufacturer-sourced figures above. Source: DeWalt DCF850B Product Page (dewalt.com).
Frequently Asked Questions
Does this come with a battery?
No. This is the bare tool (DCF850B). It runs on any DeWalt 20V MAX battery; battery and charger are sold separately.
How is this different from the full-size DCF845?
It's DeWalt's compact ATOMIC line: about 1 in. shorter front to back for tight spaces, at a slightly lower top speed (3,250 vs. 3,400 RPM) and impact rate. Max torque is the same 1,825 in-lbs on both.
What bits does it take?
Standard 1/4 in. hex impact-rated bits and sockets, held by the quick-connect chuck with no sleeve to retract.
What's in the box?
The impact driver and a belt hook. No battery or charger.