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Cordless Impact Wrenches

Show me 22V cordless impact wrenches designed for performing light and heavy-duty anchoring and bolting in metal, wood and concrete

Show me 22V cordless impact wrenches designed for performing light and heavy-duty anchoring and bolting in metal, wood and concrete
SIW 6-22 ½” Cordless impact wrench Power-class cordless impact wrench with 1/2" friction ring anvil for a wide range of concrete anchoring and steel or wood bolting (Nuron battery platform)
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Cordless Impact Wrenches

From compact to high-torque, Hilti has you covered

The wait is over. Hilti now offers more performance from compact tools that weigh less. You and your team deserve every opportunity to help you reach maximum jobsite productivity, and we're here to partner with you in the process.

As part of our new 22V Nuron cordless platform, you can get more done, reducing the need to stop and switch out batteries.

Features and Benefits

Nuron battery technology

The Nuron lithium-ion battery platform provides greater amount of run time per charge to help enable improved productivity. 

Built tough

Hilti customers can expect a longer life from our power tools. With the brushless motor and robust ring anvil in our impact wrenches, you can count on it. 

Help increase user productivity

These impact wrenches are shorter and lighter than their predecessor allowing for a more productive experience as you anchor and bolt all day.  

Speeding things up

Use our Nuron impact wrenches with brushless motors and higher efficiency hammering mechanisms to help deliver better production on applications.

In a tight spot?

The compact design of the SIW 4AT-22, SIW 6-22 and SIW 8-22 impact wrenches help make them the right tool for higher productivity, and ideal for use in tight spaces. Powered by the Nuron battery platform, these tools have a variable speed trigger providing you with your choice of speeds to help control torque. Our improved LED light helps enables a better view of your application. 


Setting anchors in concrete

  • Structural and non-structural base plates
  • Formwork 
  • Hand rails
  • Ledgers 
  • General screw anchoring

Metal bolting

  • Primary and secondary steel structures
  • Hand rails
  • Racking
  • Machinery, equipment

Setting lag bolts in wood

  • Concrete formwork
  • Wood structures

SIW 4AT-22

Anchoring done with more efficiency

Powered by the all-on-one Nuron cordless platform, you can get more work per charge in a more compact tool body. The SIW 4AT-22 includes features such as three speed modes, a bright LED light to illuminate your work, and a tethering option for added safety.

Choose your sockets

1/2" S-NSD Impact socket set

Hilti's long impact wrench sockets are great for reaching recessed fasteners.

Shop long impact sockets


For longer reach, chose Hilti's deep impact sockets.

Shop deep impact sockets

Why choose Hilti power tools?

We stand behind our customers and the quality of our tools. That's why we offer two year wear and tear coverage with parts, shipping and labor on us. We also offer a one-day turnaround in our repair centers to help avoid unproductive downtime.

Learn more about our tool warranty

Discover the Nuron difference

With Nuron, run all your tools on one cordless platform with extended battery life. You can use fewer batteries and chargers on the jobsite while still getting more run time with tools that can deliver more power than 36V, corded or gas.

Learn more about Nuron

Help boost productivity with tool services

Help avoid costly downtime, boost productivity and gain greater control over your inventory and costs with Hilti's digital tool services. Hilti offers many solutions to help keep your team and equipment running smoothly.

Learn more about Hilti's tool services
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