Cordless Impact Wrenches
Show me 22V cordless impact wrenches designed for performing light and heavy-duty anchoring and bolting in metal, wood and concrete
Cordless impact wrenches
Get the torque you need when anchoring in concrete, lag bolting in wood and bolting steel
Hilti´s range of 22V cordless impact wrenches covers all your fastening needs, from compact wrenches for hard to reach spots, to powerful ones for heavy duty jobs. The SIW 4AT-22 and the SIW 6AT-22 (coming soon) are compatible with Hilti’s Adaptive Torque system (SI-AT-22), a small, light interface which slides in between the impact wrench and the battery and quickly tells you when an anchor has been correctly pre-tensioned.
Work faster with the right impact wrench for your task
Choose between the right-angled SIW 4R-22 or SIW 2-A12 for tight spaces, the compact SIW 4AT-22 for non-structural fastening, the mid-torque SIW 6AT-22 (coming soon) for a broader range of applications, and the more powerful SIW 8-22 and SIW 10-22 3/4" for structural applications.Shop cordless impact wrenches
More accurate anchoring with fasteners designed specially for our impact wrenches
Our cordless impact wrenches have been carefully designed to work together with the appropriate fasteners, helping you set them correctly every time, without damaging fasteners or base materials. For efficient setting, try our Adaptive Torque module.
Simpler documentation of fastenings for easier compliance
Hilti's Adaptive Torque module documents every executed fastening, providing better accountability and more back-office efficiency, and reducing the risk of failed inspections.
Install correctly, safely and documented
Lower the risk of rework with Hilti's Adaptive Torque module
Correcting mistakes on a jobsite can add time and money to already stretched budgets. Our SI AT-22 module works with our impact wrenches to quickly and easily confirm if an anchor has been torqued according to ETA approvals. The built-in barcode scanner allows for easy, efficient setup while helping reduce opportunities for mistakes. Afterwards, the tool can be connected to a computer to create a detailed installation certificate, helping save you time on paperwork and back-office headaches down the line.
Don’t let jobsite downtime get you down
Avoid downtime with more reliable tools
Hilti impact wrenches are built with high performance brushless motors and high efficiency hammering mechanisms. Our extensive testing helps us design tools that last.
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.
Built for small spaces
Reach into tight spots with a right-angled impact wrench
Thanks to the brushless motor and Nuron platform, our cordless impact wrenches are more compact and lighter, making them easier to get into hard-to-reach spaces and more comfortable to hold for longer.
For extra-tight spaces we have the SIW 4R-22, a right-angle impact wrench with enough power to get the job done. Its longer grip and in-line battery interface means you can reach even further into those confined spaces – all illuminated by a strong LED light.
How to choose the right impact wrench
What is a cordless impact wrench used for?
An impact wrench is a socket wrench power tool which delivers higher rotational torque and higher torque output with minimal effort. It is great for tightening and loosening bolts, lug nuts and rusted fasteners.
What is the difference between an impact driver and an impact wrench?
While these two tools may look similar, they are better suited to different applications. Impact drivers often come with a 1/4” hex collet that accepts 1/4” hex shank bits. They tend to be more focused on speed rather than power and are more suited to smaller projects. Impact wrenches usually come with a square drive, available in different sizes. The main difference is the higher impact force an impact wrench can produce. This can make impact wrenches heavier, but better suited for tougher jobs where more power, or torque, is required, such as fastening larger anchors, hex-head bolts, nuts, lag screws, or tackling extremely tight, or rusted fasteners.
What size impact wrench do I need?
The size of an impact wrench is mostly related to the size of the bolts you will be working with, and the torque that is required. Generally speaking, the bigger the impact wrench, the bigger bolts it can handle, and the more torque it provides.
What chuck size do I need for my impact wrench?
All impact wrenches have a square drive chuck, and these come in different sizes, such as 3/8”, 1/2” and 3/4”. The chuck size relates to the impact socket you want to use.
How much power do I need when choosing an impact wrench?
When it comes to impact wrenches, power is measured by torque. The higher the torque value, the greater the force, but be aware that there is no way to accurately measure the maximum torque of an impact wrench, so it is always best to request a demonstration, or test the wrench with the application.
What mistakes should I avoid when using an impact wrench?
- Using the wrong-size tool for the fastener. Using a large tool on a small fastener may lead to improper installation.
- Mismatching sockets: impact wrenches are not compatible with regular sockets and can cause slippage and damage when under strain. Be sure to use the correct sockets for your wrench.
- Over-tightening: it is easier to overtighten when using an impact wrench as it will continue to tighten as long as the trigger is pulled.
- Damaging threads: it is better to start the bolt or nut by hand, as using your fingers will let you know if the hole and the fastener are properly aligned.
- Using impact sockets past their lifetime. Rounded edges and corners on the drive or fastener side indicate it may be time for a new socket.
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
Take control of your downtime
Avoid unplanned downtime by scheduling it into your operations. Set reminders for when your tools need to be serviced or use ON!Track for scheduled maintenance alerts.Learn more about Hilti On!Track
Always have the latest tools
Hilti Fleet Management is another option for keeping up productivity on the jobsite: regularly replace tools in your fleet with the latest models, avoiding costly downtime and complying with the latest safety standards.Explore our Fleet Management solution