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Internet # 203857652

Model # 2101-22

Store SKU # 1000724875

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M4 4V Lithium-Ion Cordless 1/4 in. Hex Screwdriver 2-Battery Kit

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$129.00
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  • 2 speed gearbox produces 200 or 600 RPM
  • 21 clutch settings for superior torque control
  • Powerful 4V motor
  • View More Details

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Product Details

About This Product

The M4 4-Volt Lithium-Ion Cordless Screwdriver Kit incorporates the latest Milwaukee core technologies in motor, REDLINK Intelligence electronics and REDLITHIUM 2.0 batteries, increasing power and run time while shrinking its size. It features a 21-position clutch with auto shut-off that stops rotation of the bit once the desired torque setting is met. The quick-change chuck allows for 1-handed bit changes, and a snug bit grip prevents dropped screws when the screwdriver is inverted.

Highlights

  • Includes 2101-20 M4 screwdriver, two 48-11-2001 M4 REDLITHIUM 2.0 compact battery packs, 48-59-2001 charger and #2 Phillips bit
  • 21-position clutch with auto shut-off for improved torque control
  • Heavy-duty, 2-speed gearbox offers 200/600 RPM
  • Powerful motor delivers 44 in. lbs. of torque
  • Drill mode easily drills pilot holes or removes damaged screws
  • 2 REDLITHIUM batteries with charger offer superior run time and durability
  • Onboard battery fuel gauge conveniently displays remaining run time
  • 1/4 in. quick-change chuck for 1-handed bit changes
  • Compatible battery: 48-11-2001 M4 REDLITHIUM 2.0 compact battery pack
  • Compatible charger: 48-59-2001 M4 charger
  • 5-year limited warranty on tool; 2-year limited warranty on batteries
  • Shop All Milwaukee Tools
  • Click here for more information on Electronic Recycling Programs
  • Return Policy

Product Information

Internet # 203857652

Model # 2101-22

Store SKU # 1000724875

Additional Resources

Shop All Milwaukee

Specifications

Dimensions: H 9.6 in, W 2.0 in, D 2.0 in

Dimensions

Product Depth (in.)

2.0 in

Product Height (in.)

9.6 in

Product Width (in.)

2.0 in

Details

Battery Amp Hours

2 Ah

Battery Power Type

Lithium Ion

Battery Voltage (V)

4V

Charger Included

Charger Included

Chuck Size (In.)

1/4 In.

Chuck Type

Hex

Condition

New

Cordless Tool Type

Screw Gun

Cordless/Corded

Cordless

Drill/ Driver Type

Electric Screwdriver

Included

Battery Included, Charger

Maximum Speed (RPM)

600 RPM

Motor Type

Brushed

Number of Total Batteries Included

2

Power Tool Features

Keyless Chuck, Variable Speed

Product Weight (lb.)

1.0 lb

Returnable

90-Day

Tools Product Type

Power Tool

Torque (lb-in)

44 In lbs

Warranty / Certifications

Manufacturer Warranty

5 Year Warranty on Tool & 2 Year Warranty on Batteries

Questions & Answers

What bits and tools are included in this kit?
ByNov 22, 2024
1 Answer | 
Answer This Question

Hi, John! The M4™ 1/4" Hex Screwdriver Kit (2101-22) includes the M4™ 1/4" Hex Screwdriver (2101-20), (1) M4™ Charger (48-59-2001), (2) M4™ 2.0 Battery (48-11-2001). - Milwaukee Tool, Social Team

By|Dec 17, 2025


    why are fuel gauge ind. lights RED on mine ??
    BySep 12, 2024
    1 Answer | 
    Answer This Question

    We would like to learn more about your experience. Could you send our team an email at Social.media@milwaukeetool.com?

    By|Sep 18, 2024


      Specs show it is supposed to have the quick change chuck. Mine was delivered with the two batteries and one charger but no chuck or tightening key. Anyone else have this issue?
      BySep 6, 2024
      1 Answer | 
      Answer This Question

      This 4V model does include a 1/4" quick-change chuck. If yours was missing from the box, please contact customer support by texting “Support” to 38698, calling 1-800-430-3376, or using online chat. They can help resolve the issue for you.

      By|Jan 31, 2025


      Will this tool drive 1 1/2” screws for corrugatedpolycarbonate panels?
      ByJul 12, 2024
      1 Answer | 
      Answer This Question

      Hi Rich! The M4 Hex Screwdriver features a powerful motor that delivers 44 in. lbs. of torque along with a drill mode that easily drills pilot holes or removes damaged screws. - Milwaukee Tool Social Team

      By|Jul 16, 2024


        Please confirm the country(s) of manufacture for both the tool and the charger unit…
        ByJun 19, 2024
        0 Answer | 
        Answer This Question

        Is the motor brushless ?
        ByDec 3, 2023
        1 Answer | 
        Answer This Question

        Hello, the screwdriver does not have a brushless motor. - Milwaukee Tool, Social Team

        By|Dec 6, 2023


          It shows one battery, but the specification stated that it comes with two. Does it come with only one or does it come with two?
          ByNov 19, 2023
          1 Answer | 
          Answer This Question

          This kit includes two batteries, a charger, and a #2 Phillips bit.

          By|Feb 3, 2025


          Does it have LED lights
          ByOct 4, 2023
          1 Answer | 
          Answer This Question

          Hi there - No, it does not have LED lights. - Milwaukee Tool, Social Team

          By|Oct 6, 2023


            Viewing 1-8 of 33

            Customer Reviews

            4.6 out of 5

            • 4.6 out of 794 reviews
            • 91% recommend this product
            Filter by:
            Showing 1-10 of 794 reviews
            I bought this powerful, compact and easy to use electric screwdriver for a few weeks. This Milwaukee M4 4V hex screwdriver has a 21-position clutch it will automatically shut off that stops the motor the moment the preset torque is reached, preventing you from stripping the screw heads. It is lightweight and can convert from a straight inline to a pistol grip. The variable two speeds allow you to match the speed to the material you're working with. Best of all, the Lithium battery will last all day on a single battery. This 2-battery kit will make your job complete without interruption. It really exceeded my expectations. I highly recommend it.
            by
            Excellent Milwaukee screwdriver! Would highly recommend! I like that use can use it in the straight or angled position. Not too much power either, so you don’t have to worry about stripping out fasteners. Also, would recommend the two battery option. I waited until a recent price drop on it and was able to use a $25 coupon on it since I used Afterpay which made it an even better deal!
            by
            Excellent Tool!! Perfect piece for the tool kit.
            For what it is: a screwdriver, it is an excellent tool. I also have a couple of the Dewalt gyroscopic screwdrivers but I like how the Milwaukee is a much smaller diameter which fits in tools bags easier. It’s simple, robust, has two speeds and a lockout. The clutch is an absolute must and does not disappoint for more delicate situations and the lowest setting stops even the most delicate then you can just twist your wrist to tighten up as needed. I go to it more often than the Dewalt ones. I’m sure they can improve upon it but it’s pretty dialed in. If they do add a light I certainly hope it doesn’t increase the diameter because that is one of its better features. Would rather keep it as is than add a light with more bulk. It is not an impact driver and those folks who think it should be are just lacking intelligence. For what it is…it’s an awesome tool I love to have and use.
            by
              • Recommended
              Nice hex screwdriver but lacks
              Nice hex driver but should also have a light on top of the bit driver end not just the bottom of the hex driver end.
              by
                • Recommended
                Faulty switch cost two stars ⭐️⭐️
                I’m an HVAC contractor and use this tool constantly, and have purchased them for all my techs, as the majority of the time the M12 and -18 impact guns are way too much torque than necessary; unfortunately, mine suffered the common switch failure and won’t work at all anymore. I’ll take it back to the distributor for warranty but not having it only reminds me how much I rely on it every day, and why we professionals pay premiums for our tools. Hopefully the new one has an upgraded switch by now, great tool otherwise 🤷🏽‍♂️
                by
                  • Recommended
                  This is a great tool. Replaced my older model, after 10 years. looking for another 10 years for this one.
                  by
                  • Verified Purchase
                  1 found this review helpful
                  This is an absolute must have if you remove control boards and such. Just Awesome!!
                  by
                  • Verified Purchase
                  Great tool.
                  Its built very well so it can take a bit of a beating. I like that its a 2 speed and has the tourqe control. Apart from wishing it came with two batteries i have no complaints. Its a great handy tool to have. I do recommend it.
                  by
                  • Verified Purchase
                  • Recommended
                  Computer builders, ya gotta have this one for sure.
                  Saw This Used On Youtube by a guy who builds computers and he was showing it was precise enough to install Motherboard screws and other computer components. So I had to have it, and yes it does work excellent for building computers and not screwing up the screws or components, I usually set it on 2 strength. I used 12" and 8" #2 Phillips bits with it.
                  by
                  • Verified Purchase
                  • Recommended
                  not easy to use
                  I am left handed and really need it to be useful in that hand, I really wish Milwaukee would think of others. I could have just gotten a Black and Decker if I just wanted something basic and it would have been a lot cheeper. Also if you use it as a straight screwdriver it is extremly long because of the battery/handdle Very unhappy i am returning it and getting something else
                  by
                  Response from Milwaukee ToolMar 22, 2021
                  Hello, this is Natalie with Milwaukee Tool. Thank you for taking the time to leave your review. We're sorry to hear about your frustrations with your M4 4-Volt Lithium-Ion Cordless 1/4 in. Hex Screwdriver 1-Battery Kit, and would value the opportunity to learn more about your experience using the product and to provide you with support. Please feel free to reach out to us directly at socialmedia@milwaukeetool.com. Thank You
                    • Recommended
                    2 found this review helpful
                    Showing 1-10 of 794 reviews

                    Compare Key Features

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                    Product Snapshot

                    Great for homeowners looking for a compact and powerful screwdriver, making drilling pilot holes or removing damaged screws easier and more efficient.
                    Ideal for professionals or homeowners seeking a compact yet powerful tool , the Milwaukee M12 FUEL Brushless Screwdriver Kit delivers exceptional performance and durability with its brushless motor and Red Lithium battery technology ..
                    Ideal for customers who want precise torque control and compact power, ensuring efficient screwdriving.
                    Suitable for both professionals and home users seeking performance and torque control.

                    Torque Settings

                    21
                    21
                    21

                    Battery Life

                    Power

                    4V
                    12V
                    4V
                    4V

                    Recharge Time

                    Brushless Motor