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DEWALT DCF900B 1/2-inch high torque impact wrench delivers 1030 ft-lbs of fastening torque, Precision Wrench control, and brushless runtime for heavy jobs.
Categories : tools
SKU : WOR-TOO-187
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The DEWALT DCF900B 20V MAX XR 1/2-inch High Torque Impact Wrench is built for the heaviest fastening jobs. With up to 1030 ft-lbs of max fastening torque and 1400 ft-lbs of breakaway torque, it handles large flanges, wheel lugs, and concrete anchor bolts. The brushless motor extends runtime, while Precision Wrench mode helps prevent overtightening and run-off. This tool-only model is for users already in the DEWALT 20V MAX system.
The DCF900B is a 1/2-inch high torque impact gun designed for automotive, construction, and farming. It delivers enough torque to remove stubborn fasteners quickly, and the 4-mode speed settings let you dial back power when needed.
Max fastening torque is 1030 ft-lbs and breakaway torque is 1400 ft-lbs. This isn't a light-duty wrench—it's made for pipe flanges, grooved couplings, wheel lug nuts, and anchor bolt setting.
Precision Wrench control slows the tool in forward to prevent overtightening and reduces run-off in reverse. This adds safety for critical fastening tasks where you can't afford to snap a bolt or over-stress a joint.
The brushless motor runs longer per charge than brushed motors, and the Battery Guard shock-absorbing connection reduces wear on your battery pack. Actual runtime varies by battery, speed setting, and workload. With a 5Ah battery, you can typically remove more than 100 wheel lugs on a single charge in normal use.
The housing is resistant to common solvents and built to survive drops. The 1/2-inch hog ring anvil provides quick socket changes and secure retention.
1030 ft-lbs of max fastening torque and 1400 ft-lbs breakaway torque for the toughest bolts.
PRECISION WRENCH™ mode helps prevent overtightening and fastener run-off on critical tasks.
4-speed settings and variable speed trigger give you control across applications.
Brushless motor increases runtime and extends tool life compared to brushed models.
Battery Guard shock-absorbing connection helps protect your battery (not included).
Light: LED
Model: DCF900B
Motor: Brushless
Weight: 7.5 lb (3.4 kg) without battery
Anvil Type: 1/2 inch Hog Ring
Dimensions: 9.5 x 3.2 x 10.1 in (24.1 x 8.1 x 25.7 cm)
Product Type: 1/2-inch High Torque Impact Wrench
Speed Settings: 4
Max Breakaway Torque: 1400 ft-lbs (1898 Nm)
Max Fastening Torque: 1030 ft-lbs (1396 Nm)
Battery Compatibility: DEWALT 20V MAX / FLEXVOLT (sold separately)
Seller: Workbench World
MPN: DCF900B
This impact wrench runs on the same 20V MAX batteries as the rest of your DeWalt kit, so you don't need a new charger or battery system. For heavy continuous use, keep a spare battery rotating on a charger.
With a fully charged DCB205 (5Ah) battery, expect to remove roughly 100 wheel nuts at standard torque settings. Heavy socket work or long rundowns will lower the count.
Use speed 1 for precision removal, speed 2-3 for general fastening, and speed 4 when you need maximum power. Precision Wrench mode is a safety net for torque-sensitive joints.
The housing resists solvents and grease, and the anvil is made for fast socket changes even with gloves on.
With a 5Ah battery, you'll typically remove over 100 lug nuts in normal use; heavy torque settings reduce that count.
No, the DCF900B is tool-only. Use any DEWALT 20V MAX or FLEXVOLT battery.
It reduces tool speed to prevent overtightening in forward and run-off in reverse, ideal for critical fastening.
Yes, it delivers the torque to drive anchor bolts and threaded rod.
A 1/2-inch hog ring anvil, which provides quick socket changes and secure retention.
Torque for days.
I used this to remove lug nuts that were seized. It came right off. The precision wrench is great for delicate jobs. It's heavy but worth it.
I'm a mechanic. This impact is my go-to. It's got serious power. The brushless motor is efficient. I love the different modes. It's a bit pricey but you get what you pay for.
It's very powerful. But it's heavy to hold for long periods. The battery drains fast on high torque. But it's a pro tool.
Love it. So strong.
I was skeptical about using a cordless impact for heavy duty, but this proved me wrong. It took off bolts my air wrench couldn't. The battery lasts a long time. The precision mode is handy. I've used it every day for a month.
The power is insane. But the anvil is not detachable. I wish it had a hog ring. But it's solid.
I used it to change tires. It's a time saver. Excellent torque.
This thing is a beast. It's brutal on lug nuts. The 1030 ft-lbs is no joke. I love it.
I've been spinning wrenches for 40 years. This is the strongest battery impact I've ever held. It's not light, but you don't notice. It made a rusty frame bolt come off like it was nothing. I'm a Dewalt fan for life.
Powerful but expensive.
I used it to drive 12-inch timber locks. No problem. The battery life is good. It's heavy, but you'll forget when it does the job.
