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SIW 2-A12 Cordless impact wrench
Subcompact-class cordless impact wrench with 3/8” friction ring anvil for economical anchoring and bolting, especially in cramped spaces
- Anvil type: 3/8" friction ring
- Maximum torque: 133 ft-lbs (1)
- Full hammering frequency: 3.988 impacts/minute
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Technical Data
Anvil type
3/8" friction ring
Maximum torque
133 ft-lbs (1) 1
Full hammering frequency
3.988 impacts/minute
No load RPM
gear 1: 2.75 rpm
Dimensions (LxWxH)
5.4 x 2.7 x 7 in
Tool body weight
1.7 lb
A-weighted emission sound pressure level
92 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
- 3/8" square drive with friction ring retention – for safety and quicker socket changes
- Powerful brushless motor and impact mechanism – delivers up to 2,700 rpm and 180 Nm of rated torque, but requires virtually no maintenance
- Improved tool handling – the latest Hilti grip design and 2 bright LED lights help you work in comfort, even in hard-to-reach spaces
- Unbeatable cordless performance – the combination of efficient brushless motor and the latest Hilti 12V batteries deliver our most work-per-change yet for an impact wrench
- Hilti’s ultimate cordless impact wrench for working overhead or in cramped spaces – at just 5-3/8” long and weighing under 1.7 lbs, this subcompact 12V impact wrench is our recommendation for jobs where accessibility matters most
Applications
- Driving screw anchors in concrete and masonry
- Driving lag bolts
- Tightening and releasing nuts and bolts
- Bolting equipment, automotive parts, wood frames, piping and HVAC installations
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.
Consulting & Support
Would you like an interactive demonstration of this product? Meet one of our product experts for a free and hands-on demonstration.
Use this instant messaging tool to get easy and quick access to our Customer Service team. This service is available during business hours 8:00AM to 5:00 PM CST.