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Internet # 324711091

Model # DCN21PLBW405B

20V MAX XR Cordless Brushless 2-Speed 21° Plastic Collated Framing Nailer & Brushless 4.5 in. Angle Grinder (Tools Only)

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  • Capable of driving 21 degree fasteners from 2 in. to 3-1/4 in.
  • Compatible with all DEWALT 20-Volt MAX batteries and chargers
  • Part of the PERFORM & PROTECT line of products
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Product Details

About This Product

The 20-Volt MAX 21° Plastic Collated Cordless Framing Nailer delivers the performance demanded by pro's to get the job done. The DCN21PL can drive a range of plastic collated fasteners up to 3-1/4 in. Dia and 0.148 in. Dia into a wide range of materials. Its compact shape, well-balanced design and easy-to-operate features make it a highly productive tool capable of getting the job done quickly and efficiently. 100% battery power means you can show up and start working without wasting time setting up a compressor or spending money on costly fuel cell replacements. This brushless small angle grinder DCG405B requires no time changing brushes and offers a long motor life.


  • Dual-speed motor optimized to drive a wide range of fasteners for versatility
  • Tool-free depth adjustment for precise nail placement
  • Stall release lever to reset driver blade in the event of a jam
  • Easy access to the nosepiece for removing jammed nails
  • 21° magazine holds up to 49 plastic collated nails
  • Tool-free selector switch for sequential or bump-fire modes
  • High-strength aluminum magazine with easy-to-operate pusher latch
  • Adjustable rafter hook
  • Dry fire lock out prevents tool from firing when nails are low
  • Capable of driving 0.0148 in. Dia nail into dense wood
  • Bump and sequential firing modes
  • 2 in. to 3-1/4 in. fastener lengths
  • Top load magazine
  • DCG405B Kickback brake engages when a pinch, stall or bind-up event is sensed and the electronic brake engages with maximum force to quickly stop the wheel, reduce the movement of the grinder and shut the grinder off
  • DCG405B brake stops wheel in 2-seconds or less on average
  • DCG405B power loss reset prevents accidental restarts following a power disruption when the tool is left in the on position
  • DCG405B 850 maximum watts out
  • DCG405B 5/8 in.-11 arbor
  • Click here to shop one of the top DEWALT Framing Nails sold separately
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Product Information

Internet # 324711091

Model # DCN21PLBW405B

Additional Resources



Dimensions: H 5.938 in, W 17.625 in, D 17.938 in


Battery Charge Time (Hours)


Nail Angle

21 degree

Nail Gauge


Product Depth (in.)

17.938 in

Product Height (in.)

5.938 in

Product Width (in.)

17.625 in


Air Tool Type

Air Nailer

Battery Amp Hours

No Battery


Tool Only

Charger Included

Charger Not Included



Cord Style




Firing Mode

Full Sequential


No additional components or accessories are included

Loading type


Magazine Capacity


Maximum Fastener Size

3-1/4 in

Minimum Fastener Size

2 in

Motor Type



Single Purpose

Nailer Features

No Features

Number of Total Batteries Included


Power Type




Tool Weight (lb.)

10.27 lb

Tools Product Type

Air Tool

Voltage (v)


Questions & Answers

Q:About how many 3” nails will a fully charged 4ah battery drive?
by|Apr 12, 2024
1 Answer
Answer This Question

A:  Please contact us at WECARE@SBINC.COM for further assistance with your inquiry.

by|Apr 12, 2024
    Q:Will a flap disc attach to this?
    by|Apr 3, 2024
    1 Answer
    Answer This Question

    A:  Yes, you can us flap disc with the DCG405B.

    by|Apr 11, 2024
      Q:What blade(s) is needed to cut stone
      by|Mar 18, 2024
      1 Answer
      Answer This Question

      A:  We would recommend using a masonry blade for cutting stone.

      by|Mar 21, 2024
        by|Mar 17, 2024
        1 Answer
        Answer This Question

        A:  No, the DCN21PLB is a bare tool and will not include a battery or charger.

        by|Mar 20, 2024
          Showing 1-4 of 49

          Customer Reviews

          4.7 out of 5

          • 4.7 out of 247 reviews
          • 75% recommend this product
          Filter by:
          Showing 1-10 of 247 reviews
          Came missing a screen
          Grinder came missing a screen over the motor. The screen stops metal particles from jamming the motor up.
          Response from DewaltProductExpertNov 6, 2023
          Hello Apollo. Thank you for your feedback regarding DCG405B. I am sorry to hear you are unhappy with this product and would be more than happy to assist you with a resolution. If you would like further assistance, please email support at wecare@sbdinc.com and reference ticket 8463041 ,so all information is easily available for the agent to assist you further. Thanks, Mitzy DEWALT Social Media Team
            One of the Best Grinders I have purchased
            This is one of if not the best grinder I have used in a long time. The power with the Ergonomics are unmatched. The Kickback brake is great and stops as soon as you release.
              • Recommended
              1 found this review helpful
              Very short battery life, sharpened 1 set(3) blades and had to change battery.
              • Verified Purchase
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              It's supposed to shoot up to .148 nails. It does but it doesn't do it well. 16D .131 nails work better in this gun than 10D .148 commons, which are required often in sheer wall nailing. Other than that it is nice to not have to drag around an air hose. The 6AH batteries last a long time and you can shoot several racks of nails before you have to change batteries. Make sure you have the right size allen wrench to remove jammed nails.
              • Verified Purchase
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              Showing 1-10 of 247 reviews