What Is an Impact Driver?
An impact driver is a high-torque power tool designed specifically for driving screws and fasteners quickly and efficiently. Unlike a standard drill, an impact driver uses a combination of rotational force and concussive blows to drive fasteners without stripping heads or fatiguing your wrist. Once you use one, you'll wonder how you ever managed without it.
Impact Driver vs. Drill: What's the Difference?
A drill is designed for boring holes and driving light fasteners with precision. An impact driver delivers significantly more torque for driving long screws, lag bolts, and stubborn fasteners. Impact drivers use 1/4" hex collets rather than chucks, making bit changes fast and tool-free. For most fastening tasks, an impact driver is faster and easier on your body than a drill.
Types of Impact Drivers
1. Cordless Impact Driver
The cordless impact driver is the dominant choice for professionals and serious DIYers. Powered by lithium-ion batteries (18V or 20V being most common), modern cordless impact drivers deliver impressive torque in a compact, lightweight package. Brushless motor models offer longer runtime and extended tool life.
2. Corded Impact Driver
Corded impact drivers provide consistent power without battery concerns — ideal for stationary work or extended sessions where battery management is inconvenient. Less common than cordless but still valued in production environments.
3. Pneumatic Impact Driver
Air-powered impact drivers connect to a compressor for maximum power output. Common in automotive and industrial settings where high torque and continuous use are required.
4. Right-Angle Impact Driver
The right-angle impact driver features a 90-degree head for driving fasteners in tight spaces — inside cabinets, between joists, and in confined areas where a standard driver won't fit.
Key Specifications to Consider
When choosing an impact driver, evaluate maximum torque (in-lbs or Nm), impacts per minute (IPM), RPM, battery voltage and amp-hour rating, and weight. Higher torque handles larger fasteners; variable speed triggers give you control for delicate work.
Best Uses for an Impact Driver
Impact drivers excel at driving deck screws, lag bolts, and long construction screws. They're ideal for assembling furniture, framing, decking, and any task involving high volumes of fasteners. For precision work or drilling, switch to a standard drill.
Care and Maintenance
Keep the collet clean and free of debris. Inspect bits regularly — worn bits strip screw heads. Charge batteries properly and store them at partial charge for long-term storage. Keep vents clear of dust for optimal motor cooling.
Explore our full Impact Driver collection and drive every fastener with confidence.