Drills, Drivers & Impacts

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In simplest terms, an impact driver is a high-torque, handheld power tool made for driving screws and other fasteners. Instead of using fixed rotation like a drill, an impact driver adds concussive bursts of rotational force. These bursts are called “impacts,” and they make it much easier to keep driving screws even when you hit resistance.

This is especially useful when you’re working with longer screws, hardwoods, or structural fasteners. A regular drill might stall or strip the screw head in those situations. An impact driver keeps turning with less effort.

Impact drivers are shorter than most drills, which helps navigate in tight spaces. They’re also lighter, so they’re easier to use overhead and for longer periods of time. While they’re not designed for every job, they’re the go-to tool for demanding fastening tasks.

Impact drivers are best used on fasteners where a drill might struggle. You’ll see the difference right away when working with thicker materials or driving longer screws.

Impact drivers typically excel at:

• Driving deck screws in pressure-treated lumber

• Installing lag bolts in studs or framing

• Building fences, pergolas, or raised garden beds

• Fastening plywood subfloors to joists

• Securing cabinet face frames or heavy-duty hardware

• Assembling knockdown furniture with confirmat screws

Because the tool delivers torque in quick bursts, you don’t have to push as hard. This reduces strain on your wrist and arm, especially when driving multiple fasteners in a row.

Many beginners start with a drill and later wonder why it feels underpowered for certain tasks. That’s where the impact driver comes in.

Here’s how they compare across key features:

• Impact Driver: Packs a lot of torque, using a hammering action that helps sink screws even in dense wood.

• Drill: Uses steady torque that works well for drilling and driving light-duty fasteners.

• Impact Driver: Has a hex chuck. You pull the collar forward to snap bits in or out.

• Drill: Uses a keyless three-jaw chuck that holds a variety of bit shapes and sizes.

• Impact Driver: Typically accepts ¼-inch hex shank bits.

• Drill: Works with hex, round, and specialty shank bits, including hole saws and Forstner bits.

Tip: Always make sure your bits are impact-rated when using this tool. Regular bits can shatter under load.

If your project involves both drilling and driving, you’ll either need to switch tools or use a bit holder with hex-shank drill bits.

• Impact Driver: Has no clutch and less options for speed control. This can make it harder to drive small screws without overdriving.

• Drill: Has adjustable clutch settings and smoother speed transitions, great for delicate materials or joinery.

• Impact Driver: More compact and often lighter than a drill. Easier to maneuver in cabinets or awkward corners.

• Drill: Typically longer and heavier, though more and more tool manufacturers have compact models available.

You can, but it depends on the job. Impact drivers aren’t built for precision drilling. If you’re building furniture or cabinetry, this matters.

Here’s when it works:

• Basic pilot holes using hex-shank drill bits

• Drilling through softwoods with general-purpose bits

But here’s when to avoid it:

• Drilling clean, flat-bottomed holes with Forstner bits

• Making pocket holes for joinery

• Drilling in metal, masonry, or tile

• Using hole saws

For most DIYers, the answer is yes. 

Think of it this way:

• Drill = versatility. You use it to drill holes, start pilot holes, and drive screws with control.

• Impact Driver = muscle. You use it to drive screws faster and deeper when torque is the priority.

Here’s a common workflow in a small shop:

1. Use your drill to pre-drill holes in plywood.

2. Switch to the impact driver to secure fasteners.

3. Use the drill again for countersinking or hardware installation.

Having both tools ready lets you move through your project without constantly swapping bits. You save time and keep your workflow clean. You also ensure you’re using the right tool for every application.

Still not sure which one to reach for? Here’s a quick guide.

Use a drill when:

• Boring clean holes for hardware or joinery

• Driving small or short screws

• For precise depth control

• Using a Kreg pocket-hole jig to drill pocket holes

• Working in MDF, melamine, or softwoods

Use an impact driver when:

• Driving long or thick screws

• Fastening into hardwoods or treated lumber

• Working on framing, decks, or outdoor builds

• Installing cabinets and need extra holding power

• Fastening brackets, cleats, or heavy-duty hardware

Here are a few real-world woodworking tasks where an impact driver will save you time and frustration:

• Mudroom lockers: Drive long screws into plywood frames with better hold.

• Wall-mounted cabinets: Use lag screws to secure cleats into wall studs.

• Workbench assembly: Fasten thick legs and aprons together with lag bolts or structural screws.

• Outdoor planters or garden beds: Sink deck screws in pressure-treated 2x and 4x material without stripping.