Hart 20V 1/2-Inch Impact Wrench HPIW01

Hart 1/2 inch impact wrench

Hart Impact Wrench a Perfect Addition to DIY Mechanic’s Toolbox

Hart has added another option to the stable of helpful cordless tools, this time focusing on the garage. The Hart 1/2″ 20V Impact Wrench supplies the impact power to handle your lugnuts and larger nuts and bolts, all without the hassle of air hoses and compressors.

10-Second Summary

  • Model: Hart HPIW01
  • Delivers 350 ft. lbs. of torque
  • 0-2,900 RPM
  • 0-3,200 IPM
  • 3.3 lbs.
  • 1/2″ square drive with friction ring
  • LED work light
  • Warranty: 3 years
  • Price: $119 (bare tool)


The Hart 20V 1/2″ Impact Wrench delivers up to a maximum of 350 ft-lbs of torque. It spins up to between 0-2900 RPM and hits at a rate of up to 3200 impacts per minute.

Hart 1/2 inch impact wrench

For the casual mechanic, this is likely more than enough power to get you through a majority of common fastening and loosening applications. And, it accomplishes all of this power and portability in a 3.3-lb. frame.

The Hart HPIW01 uses a friction ring for quick socket changes. An integrated LED work light lets you see what you’re doing, even when you’re under your hood or in a space where light isn’t optimal.

Check out our best cordless impact wrench article to see our specific recommendations.

Our Thoughts

That 350 foot-pounds number seems to fall under “loosening torque”. Still, even a couple of hundred foot-pounds of fastening torque takes care of a majority of jobs you find in the amateur or hobbyist automotive world. A tool like this can remove most lug nuts from anything from cars and trucks to zero-turn lawnmowers. It also gives you the ability to drive a lug nut on until you hit the impact mechanism—and then finish with a torque wrench to get the exact amount you need.

While not a professional-level tool, the Hart HPIW01 20V impact wrench should find a wide appeal. The 3-year warranty doesn’t hurt either.

Pricing and Availability

Like the rest of the Hart 20V lineup of cordless tools, you can find the Hart 1/2″ Impact Wrench exclusively at Walmart. It’s sold as a bare tool, which lets you keep your options open for how much battery you actually want to commit to. You have a 1.5Ah, 2.0Ah, and 4.0Ah options available.

The Hart HPIW01 retails for $119, and it comes with a 3-year warranty.

Hart Impact Wrench Specs

  • Model: Hart HPIW01
  • Battery: 20V Lithium-Ion
  • Speed: 0-2,900 RPM
  • Impact: 0-3,200 IPM
  • Torque: Up to 350 ft.lbs.
  • Weight: 3.3 lbs.
  • Warranty: 3 years
  • Price: $119 (bare tool)

Related articles