Does the DCF840B come with a battery and charger?

No. It is a bare tool, sold without a battery or charger. You need a DEWALT 20V MAX battery and charger, or a kit you already own.

How does it compare with the DCF887?

The DCF840B is shorter and lighter, but the DCF887 is rated for more torque and has a precision drive mode. Pick the 840B for tight spaces and low weight, the 887 for heavy driving.

What bit size does it take?

It has a 1/4-inch hex quick-change chuck and accepts standard 1-inch bit tips.

Is it good for cabinet and drywall work?

Yes. The three-speed trigger and light weight help with small screws and overhead work, though the impact action still needs a light touch on delicate material.

How long is the tool?

The body is under 4 inches long, which lets it fit between studs and in tight cabinet spaces.

What do buyers say about the DEWALT DCF840B-NBX, 20V, 0.25 inch Impact Driver?

Rated 5 out of 5 from 2 ratings.

DEWALT DCF840B-NBX, 20V, 0.25 inch Impact Driver

Best price now

$70.00at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

DEWALT DCF840B-NBX, 20V, 0.25 inch Impact Driver

Best price now

$70.00at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $70.00 at Walmart on Nov 12.

Our take on the DEWALT DCF840B-NBX, 20V, 0.25 inch Impact Driver

The DEWALT DCF840B is a compact 20V MAX cordless impact driver rated at up to 1,850 in-lbs of torque, 3,250 RPM and 3,800 BPM. It is under 4 inches long and weighs about 2.1 lbs, with three LED lights around the chuck and a three-speed trigger. It suits framing, decking, cabinetry, electrical, drywall and plumbing work where a drill would cam out or twist. Against bigger impact drivers it trades some peak torque for size and weight; against 12V tools it has far more driving power. It is a bare tool, so a 20V MAX battery and charger are needed.

Best forDriving long screws in framing and deckingCabinet and trim installers who want a light toolElectricians and plumbers working overheadOwners already on the DEWALT 20V MAX battery platform

Pros

High torque for its size
Short body reaches tight spots
Light at about 2.1 lbs
Three LEDs light the work area
Three-speed trigger gives control on small fasteners
Uses the wide DEWALT 20V MAX battery line

Cons

Bare tool: no battery or charger included
Not the highest torque in DEWALT's 20V lineup
Single-speed impact action can overdrive small screws
No belt hook or bit holder stated

DEWALT DCF840B-NBX, 20V, 0.25 inch Impact Driver prices at every store

WalmartNew
In stockSold by TGAS INCReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$70.00Free shippingChecked Nov 12
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About the DEWALT DCF840B-NBX, 20V, 0.25 inch Impact Driver

The DEWALT DCF840B is a 20V cordless impact driver with a 0.25 inch chuck. It delivers up to 1,850 in-lbs of torque, 3,800 BPM and 3,250 RPM.

It has a 3-speed trigger and 3 on-board LED lights. It accepts 1 inch bit tips.

The driver is compact at under 4 inches and weighs 2.1 lbs. It is used for framing, decking, cabinetry, electrical, drywall and plumbing or mechanical work.

Voltage: 20V
Chuck size: 0.25 inch
Torque: Up to 1,850 in-lbs
Impact rate: 3,800 BPM
Speed: 3,250 RPM
Trigger: 3-speed
Lighting: 3 LED on-board lights
Bit tips: Accepts 1 inch bit tips
Length: Under 4 inches
Weight: 2.1 lbs
Color: Yellow
Uses: Framing, decking, cabinetry, electrical, drywall, plumbing/mechanical

Specifications

color: YellowSource

Questions and answers

Does the DCF840B come with a battery and charger?: No. It is a bare tool, sold without a battery or charger. You need a DEWALT 20V MAX battery and charger, or a kit you already own.
How does it compare with the DCF887?: The DCF840B is shorter and lighter, but the DCF887 is rated for more torque and has a precision drive mode. Pick the 840B for tight spaces and low weight, the 887 for heavy driving.
What bit size does it take?: It has a 1/4-inch hex quick-change chuck and accepts standard 1-inch bit tips.
Is it good for cabinet and drywall work?: Yes. The three-speed trigger and light weight help with small screws and overhead work, though the impact action still needs a light touch on delicate material.
How long is the tool?: The body is under 4 inches long, which lets it fit between studs and in tight cabinet spaces.
Where is the DEWALT DCF840B-NBX, 20V, 0.25 inch Impact Driver cheapest?: At Walmart, for $70.00, as of our latest check.
What do buyers say about the DEWALT DCF840B-NBX, 20V, 0.25 inch Impact Driver?: Rated 5 out of 5 from 2 ratings.