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Dewalt DC820B 18V Cordless 1/2 in. Impact Wrench (Bare Tool)
Model#: DEWNDC820B

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Brand new items;Full manufacturer warranty available
Manufacturer inspected, repaired and tested items; CPO 60 day money back guarantee
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New or Recon items with possible minor cosmetic damage; CPO 60 day money back guarantee
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Dewalt DC820B 18V Cordless 1/2 in. Impact Wrench (Bare Tool)

Model#: DEWNDC820B
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$37.00 (28%)
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  • Frameless motor for extended tool durability and life
  • Compact size and weight allows access into tighter areas and reduces user fatigue
  • 1,740 in-lbs. (145 ft-lbs.) of torque to perform a wide range of fastening applications
  • 0 to 2,400 RPM and 0 to 27000 IPM for faster application speed
  • Replaceable brushes for increased serviceability
  • Textured anti-slip comfort grip provides maximum comfort
  • Durable magnesium gear case and all-metal transmission for extended durability
  • Heavy-duty impacting mechanism directs torque to fastener without kickback
  • XRP extended run-time batteries provide long run-time and battery life
  • 18V Cordless 1/2 in. Impact Wrench (Bare Tool) - DC820B
  • Bare Tool - Battery and Charger Sold Separately


Series: XRP
Cordless: Yes
Length: 5.75 in.
Weight: 4.6 lbs.
Anvil Type: Pin Detent
Batteries Included: Bare Tool
Battery Amp Hours: 2.4 Ah
Battery Type: Li-Ion
Drive Size: 1/2 in.
Drive Type: Square
Handle Style: Mid-Handle
IPM: 0 - 2,700
Onboard Light: Yes
Power Type: Electric
RPM: 0 - 2,400
Reversible: Yes
Shipping Weight: 2.45 lbs.
Torque: 145 ft-lbs.
Trigger: Variable Speed
Voltage: 18V


  • Driving and removing fasteners in wood, metal or concrete
  • Fastening and removing nuts and bolts
  • Primarily for use with impact sockets
  • More Versions Of This Item

    Item Name Price
    DEWNDC820KA Dewalt 18V Cordless XRP 1/2 in. Impact Wrench Kit
    View »


    Product Reviews


    by PowerReviews
    Dewalt18V Cordless 1/2 in. Impact Wrench (Bare Tool)

    (based on 6 reviews)


    of respondents would recommend this to a friend.


    • Good grip (5)
    • Easy to store (3)
    • Easy to use (3)
    • Good power output (3)
    • Good safety features (3)


      Best Uses

      • Home repair (3)
      • In the field (3)
      • In the workshop (3)
      • Loosening nut & bolts (3)
        • Reviewer Profile:
        • Avid do-it-yourselfer (3)

      Reviewed by 6 customers

      Sort by

      Displaying review 6

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      (1 of 1 customers found this review helpful)


      "light & very strong"

      By Buck

      from leicester, nc

      About Me Avid Do-It-Yourselfer

      Verified Buyer


      • Easy To Store
      • Easy To Use
      • Good Grip
      • Good Safety Features
      • Powerful


        Best Uses

        • Gifts
        • Home Repair
        • In The Field
        • In The Workshop

        Comments about 18V Cordless 1/2 in. Impact Wrench (Bare Tool):

        Tool works great on auto, farm equipment, and at the work place

        Displaying review 6

        Back to top

        Questions & Answers

        Do you have questions about this product?

        get answers from real customers and in-house experts with AnswerBox.

        3 Questions | 3 Answers
        Displaying questions 1-3
        • 18V Cordless 1/2 in. Impact Wrench (Bare Tool)


          does this come with a case?
          Asked on 10/18/2013 by billy

          1 answer

          • CUSTOMER CARE


            No, this impact wrench does not include a case.

            Answered on 10/22/2013 by Ken from Atlanta, GA
        • 18V Cordless 1/2 in. Impact Wrench (Bare Tool)


          Can you change the torque?
          Asked on 9/5/2013 by Sparks

          1 answer

          • CUSTOMER CARE


            No, the torque setting cannot be changed.

            Answered on 9/6/2013 by Ken from Atlanta, GA
        • 18V Cordless 1/2 in. Impact Wrench (Bare Tool)


          Will a DC9181 battery work in the DC 820B Impact Wrench?
          Asked on 11/26/2012 by curly

          1 answer

          • A:

            Yes, the DC9181 battery will work on the DC 820B Impact wrench and all other DeWalt 18v wrenches.

            Answered on 11/27/2012 by Community Answer from None
        Displaying questions 1-3

        Do you have a question about this product? 



        Most DEWALT® Tools purchased on or after January 1, 2004 come with a warranty package that includes:

        Three-Year Limited Warranty. DEWALT will repair, without charge, any defects due to faulty materials or workmanship for three years from the date of purchase. This warranty does not cover part failure due to normal wear or tool abuse. For further detail of warranty coverage and warranty repair information, visit or call 1-800-4-DEWALT (1-800-433-9258). This warranty does not apply to accessories or damage caused where repairs have been made or attempted by others. This warranty gives you specific legal rights and you may have other rights which vary in certain states or provinces.

        One-Year Free Service Contract. DEWALT will maintain the tool and replace worn parts caused by normal use, for free, any time during the first year after purchase.

        90-Day Money Back Guarantee. If you are not completely satisfied with the performance of your DEWALT Power Tool, Laser, or Nailer for any reason, you can return it within 90 days from the date of purchase with a receipt for a full refund - no questions asked.