Nuron
SIW 4AT-22 ½” Cordless impact wrench
Compact-class cordless impact wrench with the ultimate balance of power and handling (Nuron battery platform)
- Anvil type: 1/2" detent pin
- Maximum torque: 66 ft-lbs (1); 100 ft-lbs (2); 157 ft-lbs (3)
- Nut busting torque: 249 ft-lbs
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Technical Data
Anvil type
1/2" detent pin
Maximum torque
66 ft-lbs (1); 100 ft-lbs (2); 157 ft-lbs (3) 1
Nut busting torque
249 ft-lbs
Full hammering frequency
3500 impacts/minute
Number of gears
3
No load RPM
gear 1: 1000 rpm; gear 2: 1500 rpm; gear 3: 2300 rpm
Dimensions (LxWxH)
6 x 2.7 x 8.5 mm
Tool body weight
2.3 lb
A-weighted emission sound pressure level
96 dB (A) 2
- Do not use the tool for applications where an exact torque or maximum torque is specified - there is a risk of over-tightening and damaging the screw or workpiece.
- According to the applicable product standard (see the Operating Instruction for more details)
Documents
Features & Applications
Features
- The ideal cordless impact wrench for non-structural fastening, such as MEP supports and handrails
- Longer tool lifetime – brushless motor means the impact wrench lasts longer and gets more work done per charge
- Faster anchor setting with more control – three speed settings and improved LED light
- On the Nuron battery platform – cordless impact wrenches without compromise thanks to longer-lasting batteries, time-saving accessories and a range of services to keep you productive, today and tomorrow
Applications
- Setting HUS anchors in concrete – such as for baseplates, formwork props, handrails and temporary fixtures (1/4” to 5/8” diameter)
- Metal bolting in steel – such as handrails, racking and machinery (3/8” to 1/2” diameter)
- Lag bolting in wood – such as for wooden roofs or temporary structures (up to 3/8” diameter)
- Setting wedge anchors in concrete (3/8” to 5/8” diameter)
For approval or certificate information, please see individual items.
Services

Hilti Tool Service
- Product warranty against parts and manufacturing irregularities for 20 years
- Service is free of charge up to 2 years, including wear & tear, pick-up and delivery
- 1 or free, in and out of the repair center the same day or repair is free of charge

Fleet Management
- Monthly usage fee covering all tool, service and repair costs helping to ensure absolute cost control and back-office efficiency.
- High-performing tools and latest technology help to increase jobsite productivity.
- Loan tools during repair to reduce downtime.
- Temporary tools for peak times and special applications help to reduce investments.
- Theft coverage helps to reduce financial risk and unexpected expenses.
Product Videos
Consulting & Support
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