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Internet # 334336071

Model # 3401-20

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M12 12V Lithium-Ion Subcompact Brushless Cordless 3/8 in. Drill Driver (Tool-Only)

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$129.00
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  • 5.4 in. cordless drill design offers max access and control
  • Ultra portable and lightweight power drill at 2 lbs with battery
  • Brushless motor delivers power with 350 in-lbs torque
  • View More Details

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Product Details

About This Product

The MILWAUKEE® M12™ Subcompact Brushless 3/8” Drill/Driver Bare Tool features the most compact and lightest weight drill/driver, providing ultimate access into tight spaces. The compact drill is only 5.4” in length and under 2 pounds with a battery, allowing for minimal fatigue and excellent control, especially while working overhead or in tight spaces. The brushless motor delivers optimal tool performance at 350 in-lbs. of torque and up to 1,550 RPM, tackling a wide range of drilling and fastening applications. The drill features premium components, including a 3/8” metal chuck, providing best-in-class durability. MILWAUKEE® REDLINK™ Intelligence communicates with the M12™ REDLITHIUM™ batteries (sold separately) to deliver optimal performance for the tools. The M12™ Subcompact Brushless Drill/Driver is part of the M12™ system, fully compatible with over 150+ solutions.

Highlights

  • Subcompact design: superior balance and control, ideal for overhead drilling or driving fasteners in tight spaces
  • Only 5.4" in length
  • 350 in-lbs. of torque
  • 0-450 RPM in low & 0-1550 RPM in high
  • 2 lbs. with kitted battery
  • Metal 3/8 in. chuck: maximum durability
  • REDLINK Intelligence™: Advanced overload protection defends against heavy duty applications and monitors the temperature to prevent damage and ensure maximum tool & battery life
  • REDLITHIUM™ Battery: Superior pack construction, electronics, and performance deliver more work per charge and more work over pack life than any battery on the market
  • Compatible with the Milwaukee® Accessory Bit holder 49-16-3697
  • 5 year tool warranty, 2 year battery
  • Kit Includes: M12™ Subcompact Brushless 3/8” Drill/Driver, (2) M12™ REDLITHIUM™ CP 2.0 battery packs, M12™ charger and contractor bag
  • Part of the M12™ System, featuring over 150+ tools
  • Portable drill designed to be ultra portable and lightweight at 2 lbs with battery
  • Brushless drill motor delivers power with 350 in-lbs torque
  • Click here for more information on Electronic Recycling Programs
  • Return Policy

Product Information

Internet # 334336071

Model # 3401-20

Additional Resources

Shop All Milwaukee

Specifications

Dimensions: H 7.6 in, W 2.0 in, D 5.4 in

Dimensions

Product Depth (in.)

5.4 in

Product Height (in.)

7.6 in

Product Width (in.)

2.0 in

Details

Battery Amp Hours

No Battery

Battery Power Type

Lithium Ion

Battery Voltage (V)

12V

Battery/Charger

Tool Only

Charger Included

Charger Not Included

Chuck Size (In.)

3/8 In.

Chuck Type

Keyless

Cordless Tool Type

Drill/Driver

Cordless/Corded

Cordless

Included

Tool Only

Maximum Speed (RPM)

1550 RPM

Motor Type

Brushless

Number of Total Batteries Included

0

Power Tool Features

Built-In Light, Compact, Forward/Reverse Switch, Variable Speed

Product Weight (lb.)

1.58 lb

Returnable

90-Day

Tools Product Type

Power Tool

Torque (lb-in)

350 In lbs

Warranty / Certifications

Manufacturer Warranty

5 Year Limited Warranty

Questions & Answers

dos this item have reverse
ByOct 6, 2026
1 Answer | 
Answer This Question

Yes, the M12™ Subcompact Brushless 3/8" Drill/Driver Kit (3401-22) has both forward and reverse operation.

By|Oct 17, 2026

    (1)

    What good are the reviews if most all of the reviews are for the "1/2 in" drill and not the "3/8 in" drill I am interested in buying? I am looking at the "3/8" information/description?
    ByJun 24, 2026
    1 Answer | 
    Answer This Question

    HD and most other retailers started aggregating reviews a few years ago - it's terrible. For HD you can look for the "current item selection" button at the top of the reviews and that will exclude all the other fluff. It's a pain but it mostly works.

    By|Jul 24, 2026

      (4)

      What good are the reviews if most all of the reviews are for the "1/2 in" drill and not the "3/8 in" drill I am interested in buying? I am looking at the "3/8" information/description?
      ByJun 24, 2026
      0 Answer | 
      Answer This Question

      Planning on buying this drill. Is it alright to use the new m12 5.0 high output battery on this model drill? Thanks for your help.
      ByMay 29, 2026
      1 Answer | 
      Answer This Question

      Yes, the new M12™ HIGH OUTPUT™ XC5.0 Battery is fully compatible with the M12™ 12V Brushless 3/8" Drill Driver.

      By|Jun 5, 2026


        that this includes battery and charger?
        ByJan 15, 2026
        1 Answer | 
        Answer This Question

        Jose, the M12 FUEL 12V Lithium-Ion Brushless Cordless 1/2 in. Drill Driver (Tool-Only) only includes the tool. It does not include the battery or charger.

        By|Jan 20, 2026


          Will this drill turn both clockwise and counterclockwise?
          ByNov 5, 2025
          1 Answer | 
          Answer This Question

          Hey, Michael. Yes, the Milwaukee M12 12-Volt Lithium-Ion Brushless Cordless Subcompact Drill Driver Kit will turn both clockwise (forward) and counterclockwise (reverse). This is a standard feature, allowing you to drill and remove fasteners easily. The tool includes a forward/reverse switch for quick direction changes, supporting a wide range of applications in tight spaces and overhead work.

          By|Nov 5, 2025


            Is a protective boot sold tor this yet?
            ByOct 7, 2025
            0 Answer | 
            Answer This Question

            I see this drill if bought online comes with 2 batties does this drill come with a charger also?
            BySep 1, 2025
            1 Answer | 
            Answer This Question

            Hi, Bill. The M12 FUEL 12V Lithium-Ion Brushless Cordless 1/2 in. Drill Driver (Tool-Only) does not include a charger.

            By|Jul 24, 2026

              (1)

              Viewing 1-8 of 25

              Customer Reviews

              4.7 out of 5

              • 4.7 out of 364 reviews
              • 95% recommend this product
              Filter by:
              Showing 1-10 of 364 reviews
              Excellent drill for those situations where you do not need the power of a full size drill. But don't get fooled by it small size! it's powerful enough for most apllications at home and you get the bonus ratchet plus two batteries in different sizes. Higly recommend it!
              by
              Really handy drill specially when I use it to help with sanding tasks. Light, maneuverable and powerful enough for almost anything in my shop.
              by
              Very happy with this purchase! Wasn’t really looking for new drill but this was a great deal with 2 batteries. This drill has been miles above my old one. Very easy to use, simple ergonomic design. A lot of power in a compact drill. I would definitely recommend this drill to any professional of DIY’er looking for an upgrade. Great warranty as well. A+
              by
              The small subcompact form is a real space saver. I mainly use it for installing electrical boxes. It has alot of torque even though it's 12 volt
              by
              This drill driver is a excellent size for tight spaces with a incredible feel in the palm of your hand it has more than enough power to go thru anything you need it to with a smooth trigger feeling High quality tool
              by
              I'm really impressed with this drill. It's powerful, compact (very light as well), and does the job well. The built-in light is quite helpful.
              by
              Excellent drill, upgraded from the older M18 and this is much more powerful in a smaller overall footprint. Perfect for what we do.
              by
              This customer chose to rate the product and not provide text.
              by
              Awesome little drill
              I’m really happy with this purchase. I’m an auto Technician and the Sub Compact Drill fits perfectly in my stuffed tool box. It also puts out more than enough power to do everything I need a drill to do. It’s first job was using a stepped bit to pop holes in to a Porsche fender well to run emissions hoses to the carbon filter and it worked perfectly with a 2.0 battery. I was waffling between the Subcompact and the Fuel, and for the size and what I need a drill for the Subcompact is perfect. Really happy and would highly recommend for those who might be debating between size and power.
              by
                • Recommended
                1 found this review helpful
                Sub compact drills
                Great compact powerful drills couldnt be more happier with the purchase.
                by
                  • Recommended
                  Showing 1-10 of 364 reviews

                  Compare Key Features

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                  Product Snapshot

                  Ideal for customers who want a compact, lightweight drill driver, ensuring ultimate access and control.
                  Ideal for customers who want ultimate access into tight spaces, ensuring minimal fatigue and excellent control.
                  Built for long-lasting durability and high performance in tight spaces and demanding tasks.
                  Built for long-lasting durability and high performance in demanding drilling and driving tasks.

                  Power Output (in volts)

                  12V
                  12 V
                  12V
                  18V

                  Battery Capacity (in Ah)

                  No Battery
                  2 Ah
                  4.0 Ah and 2.0 Ah
                  Compatible with 5.0Ah

                  Variable Speed Control

                  Torque Settings

                  350 in-lbs.
                  350 in-lbs.
                  Mechanical clutch for consistency
                  Mechanical clutch for consistency

                  Brushless Motor