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Internet # 317458049

Model # 2540-21-2447-20

Store SKU # 1009479948

M12 12-Volt 23-Gauge Lithium-Ion Cordless Pin Nailer Kit with M12 12-Volt Lithium-Ion Cordless 3/8 in. Crown Stapler

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  • Most compact cordless pin nailer
  • Compact and ergonomic design signicantly reduces user fatigue
  • Part of the M12 System, featuring over 125+ tools
  • View More Details
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Product Details

About This Product

The Milwaukee M12 23-Gauge Pin Nailer Kit features the most compact cordless pin nailer, combining precision and power to deliver the performance that professional carpenters and remodelers demand, without the hassle of a compressor hose or gas cartridge. The 23-Gauge pin nailer provides users with unmatched productivity and accessibility in tight spaces and confined corners with a lightweight, ergonomic design. The nitrogen air spring mechanism allows the nailer to consistently sink pin nails at proper depth into hard or softwoods while leaving small, clean nail holes. The double-action trigger and non-marring precision point tip allow users to perform sequential driving and accurate pin placement into delicate trim pieces. The dry-fire lockout feature prevents misfires and workpiece damage. The M12 Pin Nailer drives 23-Gauge headless pin nails ranging in length from 1/2 in. to 1-3/8 in. and features all-day run time with up to 750 pin nails per charge when paired with an M12 REDLITHIUM CP1.5 battery pack. This battery-powered pin nailer also features a magazine reload indicator, tool-free drive depth adjustment, reversible belt clip, LED light, battery fuel gauge, secondary work contact tip, and carries an industry-leading 5-year limited power tool warranty. The 2447-20 is designed to drive a range of 3/8 in. flat crown staples (1/4 in. to 9/16 in.) through an array of materials and substrates.


  • Double-action trigger for sequential driving
  • No pneumatic hose or gas cartridge
  • Compatible with 1/2 in. to 1-3/8 in. 23-Gauge headless pin nails
  • Up to 750 pin nails per charge
  • Tool free drive depth adjustment
  • 2 interchangeable, non-marring, precision point tips included
  • Magazine reload indicator and dry fire lockout mechanism
  • LED light for increased visibility
  • Reversible belt clip
  • Fits all M12 batteries
  • Up to 1500 staples per charge on a compact M12 battery (battery and charge sold separately)
  • Includes: (1) M12 23GA pin nailer, (1) M12 charger, (1) M12 REDLITHIUM CP1.5Ah battery pack, (1) contractor bag, (1) M12 3/8 in. crown stapler
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Product Information

Internet # 317458049

Model # 2540-21-2447-20

Store SKU # 1009479948

Additional Resources

Shop All Milwaukee


Dimensions: H 7.7 in, W 2.6 in, D 8.7 in


Battery Charge Time (Hours)


Nail Angle

0 degree

Nail Gauge

23 gauge

Product Depth (in.)

8.7 in

Product Height (in.)

7.7 in

Product Width (in.)

2.6 in


Air Tool Type

Air Nailer Kit

Battery Amp Hours

1.5 Ah


(1) 1.5 Ah Battery & Charger Included

Charger Included

Charger Included



Cord Style




Firing Mode

Single Sequential


Bag, Battery, Battery Charger, No additional components or accessories are included

Loading type


Magazine Capacity


Maximum Fastener Size

1-3/8 in

Minimum Fastener Size

1/2 in

Motor Type



Single Purpose

Nailer Features

No Features

Number of Total Batteries Included


Power Type




Tool Weight (lb.)

3.3 lb

Tools Product Type

Air Tool Kit

Voltage (v)


Questions & Answers

Q:Can this be used to staple felt underlayment onto a roof using 1/2 plywood sheeting?
by|Apr 23, 2024
1 Answer
Answer This Question

A:  Hi Andrew! The M12 Crown Stapler is designed to drive a range of 3/8 in. flat crown staples (1/4 in. to 9/16 in.) through an array of materials and substrates. - Milwaukee Tool Social Team

by|Apr 26, 2024
    Q:Will this stapler work for upholstery?
    by|Mar 3, 2024
    1 Answer
    Answer This Question

    A:  Hello! The 2447-20 is designed to drive a range of 3/8 in. flat crown staples (1/4 in. to 9/16 in.) through an array of materials and substrates. - Milwaukee Tool Social Team

    by|Mar 5, 2024
      Q:Can it staple wired fencing
      by|Dec 18, 2023
      1 Answer
      Answer This Question

      A:  The M12™ 3/8" Crown Stapler is designed to drive a range of 3/8” flat crown staples (1/4” – 9/16”) through an array of materials and substrates. Thank you - Milwaukee Tool, Social Team

      by|Dec 19, 2023
        Q:Would this work for stapling insulation up? What staples does it use or would you use for this?
        by|Nov 28, 2023
        1 Answer
        Answer This Question

        A:  The 2447 is designed to drive a range of 3/8” flat crown staples (1/4” – 9/16”) through an array of materials and substrates. Milwaukee Tool, Social Team

        by|Dec 1, 2023
          Showing 1-4 of 66

          Customer Reviews

          4.6 out of 5

          • 4.6 out of 883 reviews
          • 87% recommend this product
          Filter by:
          Showing 1-10 of 883 reviews
          Another Great Milwaukee Tool; M12 Crown Stapler
          Right out of the box it was perfect. Without adjusting the power adjustment dial it only drove the staples in about 3/4 of the way; perfect for Christmas lights, which would be its first job. Things I love: -Magazine is slotted so I can see how many remaining staples are remaining -The dry fire lock-out is notched so I can center the staple -There is an indicator line where the staple will go -The power is adjustable and the window next to the power adjustment dial shows the current setting
          Response from Milwaukee ToolDec 8, 2023
          Tracy, it is great to hear about your experience with your Crown Stapler! Thank you for taking the time to leave a review! - Milwaukee Tool Social Team
            • Recommended
            1 found this review helpful
            Just stopped working halfway thru 1st run.
            Halfway thru 1st row of staples and it’s just quit. No attempts or motor noises when trigger pulled, only lights up the battery status. Will take back and exchange to try another.
            Response from Milwaukee ToolNov 29, 2023
            We recommend sending your tool through one of our warranty options, which can be found on the Milwaukee Tool website under the "Support" tab. If you have any questions about the options or process, email our team at social.media@milwaukeetool.com. - The Social Team
              This tool is awesome! I have never done trim before, and this thing made me look like a pro. Except for some of the cuts, but that’s on me, not the tool. Ran over 250 pins, and the battery was still at 3/4 charge, so battery life isn’t an issue. The only pin that didn’t drive was one I hit a screw head with, again, not the tools’ fault, other than that, it was absolutely perfect!
              • Verified Purchase
              spring mechanism to hold staples broke
              Waste of money. I used it twice in 3 years and it's broke. The spring mechanism doesn't hold the staple tight so only way to fire staples is upside down. Lastly , it doesn't fire staples that hard into material, typically leaves it above the wood. I cranked it as high is it goes with no luck. I Don't recommend buying this.
              Response from Milwaukee ToolAug 15, 2023
              Thank you for taking the time in leaving a review! Could you email our team at social.media@milwaukeetool.com? Thank you! - Milwaukee Tool, Social Team
                6 found this review helpful
                Perfect for woodworking and trim work
                For a lot of the work I do on a regular basis, I need to use a pin nailer to help keep pieces in a glue up together where a clamp will not work well or easily, or need to reattach trim I have removed to do some sort of fix. In the past I had to fire up my compressor, get out the long air hose, and then figure out if I had to move the compressor so I could reach where my work was, all for about 5 or 6 minutes of work. This Milwaukee cordless pin nailer has made these kind of projects so easy that doing them is a snap. The nailer is compact and very light weight and can get into spots I would normally have had trouble accessing (as compared to my other pneumatic nailers), and it is very quiet. Some of my first uses required I be up on a ladder to reattach some ceiling trim and it was extremely easy to use in a relatively precarious position (and I did not have to be concerned with an air hose). It feels good in the hand and allows precise location of where you want the pin to go. It drives the 23 gauge pins it uses cleanly; to date I have had no split wood, misfires, or bent pins. It gets a lot of work done on a single battery charge. The two stage trigger took a bit of getting used to (first time I have used one like this) but I found I liked it a lot the more I used it. The kit contains a soft case, tool, charger, and M12 battery and while it may be a bit pricey, you are getting Milwaukee quality in addition to the convenience this tool provides. Highly recommended; wish I had this a year ago!
                • Recommended
                4 found this review helpful
                Wanted one for a long time
                I've wanted a pin nailer for a long time for adding trim to a piece of furniture. The 23-gauge pins are a lot easier to conceal as compared to my pneumatic 18-gauge brad gun. This also has the advantage of being battery powered, so I don't need to drag out the air hose and compressor. These drive the pins well, and there is a depth of drive controller wheel. However, I wasn't able to see much difference. The kit is very nice and includes the 12V battery, charger, and nailer in a nice carry case. I might recommend a "tool-only" version for people like me that already have Milwaukee 12V batteries and chargers. This uses 1/2" to 1-3/8" 23-gauge pin nails. I bought 3 different sizes of pin nails for less than $30. I think it will take a long time to use up 6000 pin nails. Nice features: window showing you have nails left (no dry firing), an LED light that shines on the nailing location, light weight, and a dual-action trigger system to prevent accidental firing. I highly recommend this product for anyone thinking about getting a pin nailer.
                • Recommended
                4 found this review helpful
                Great tools
                I am extremely happy with all of my Milwaukee tools They are top quality tools. I have the 15 gauge finish nail gun and the 18 gauge brad nail gun and now the 23 gauge pin nail gun. The pin nail gun comes with a nice case with velcro straps to hold it securely in place. The kit also comes with the gun, 12v battery and a charger, easy to read directions. The only problem I have found with any of the cordless nail guns is the weight. The pneumatic guns are light weight but you have to drag around a compressor and hose with you. They are not that heavy so it's really not a problem. Highly recommend it.
                • Recommended
                1 found this review helpful
                Milwaukee does it right!
                Just the presentation of this tool and its components are impressive. The nailer, charger, and battery are all included in a very nice storage case that will also hold a variety of nail sizes in a mesh pocket on the underside of the lid. I’m not sure if the battery needed a full charge, but it did charge within an hour. (I lost track of time.) I got this to use specifically for building some picture frames that require small fasteners and am really looking forward to this project and many more to come. I haven’t had the chance to use this yet, but I expect it to be top notch just like everything else made by Milwaukee.
                • Recommended
                1 found this review helpful
                Solid tool
                Very solid and well packaged tool. I was very impress. I’m not the type of person who reads instructions so after charging the battery I just loaded it up and started using it to see how well this thing works. It was simple to load as you just lay in the nails (i.e., see photo) after you pull down on nail holder/magazine. I didn’t bother with adjusting nail depth but you can see it nailed flush with the thick piece of wood in the photo. No misfires and I like Milwaukee’s use of a trigger safety that is very easy to push down with your finger to activate the tool – very safe. This also turns on the LED light and battery level indicator too. Great features, light weight and solid feel. You can’t go wrong.
                • Recommended
                3 found this review helpful
                Easy to use and consistent results
                This tool is well thought out and super easy to use. Being battery operated there is obviously no compressor or hoses to run. It is also fairly compact allowing it to fit into corners. Depth of pin can be set without tools, and the double trigger first turns on the LED light and virtually eliminates accidental double strikes. Supplied are 2 non mar point tips and a wrench to free pin jams, which so far I have not needed. The advertised up to 750 pins per battery charge seems accurate. There is a battery charge indicator, a dry fire lockout, and magazine reload indicator, Nail holes are very small, clean, and make for professional appearing work. 23-Guage pin nails, in different lengths, are inexpensive and readily available at Home Depot. This tool made very short work of my baseboard trim installation.
                • Recommended
                Showing 1-10 of 883 reviews