Here’s our pick for the best impact driver bits. With this collection, you’ll never be at a loss for the right bit for the job.
When is a drill not a drill? When it’s a driver, used for securing hardware into material, rather than simply boring a hole into it. If you’re anything like us, your cordless drill gets pressed into service much more often as a way to drive or remove fasteners than making holes with twist bits. And to get the most out of this versatile tool, you’ve gotta have the right bit for the job. Here’s how to build a complete set of the best impact driver bits to allow you to take on any task.
Quick-Change Slotted and Phillips Head
Your standard screwdriver bits make quick work of standard screwdriver tasks.
Get a five-pack in each size, and keep them on every tool and in every toolbox and drawer you’ve got.
For sizes, look for:
- Slotted #1, #2, #3
- Phillips/cross-slot #1, #2, #3
Unless you’re messy with electronics and circuit boards or extra big jobs, your #2 Phillips will see the most action, so get a whole bunch of these and store them in the little bit-holders on your tools. It’s also useful to be sure to get quick-change hex drivers, which are longer and have a little notch on the end. This allows you to insert it into a variety of tools, including traditional slip chucks and the quick connect collets found on impact drivers, lightweight Li-Ion driver tools, etc.
I also really like having a set of long driver bits featuring 6″ shanks. These allow you to remove, adjust, and replace harder-to-reach hardware like you would with a standard screwdriver. $5 well spent to me.
Recommended Impact Driver Bits (Slotted/Phillips)
- DEWALT DW2166 45-Piece Screwdriving Set
- DEWALT DW2115 #2 Phillips 2-Inch Power Bit (5-Pack)
- IIT 64370 6-Inch Power Driver Bit Set, 9-Piece
Hex Insert Bits or Allen Drivers
Turns your cordless drill or driver into a powered Allen wrench or hex key. Look for sets in both standard and metric sizes, either as standard 1″ insert bits (designed to use in an adapter) or longer quick change bits.
- Standard: 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 1/4, 7/32, 3/16″
- Metric: 2, 2.5, 3, 4, 5, 6 mm
You’ll never assemble a piece of IKEA furniture without these again.
Best Impact Driver Bits – Hex Insert or Allen Drivers
- IRWIN Tools 1902388 Impact Performance Series Insert Bit Set, Assorted Hex, 1-Inch Length, 8-Pack
- Milwaukee 9-Piece Hex Drive Insert Bit
- DEWALT DW2166 45-Piece Screwdriving Set
- Neiko Pro 10280B Combination Hex Torx XZN Triple Square Impact Driver Socket Bit Set, 40-Piece
Hex Head Bolt + Nut Drivers
These feature standard 1/4″ hex shanks attached to exterior hexagonal drivers, used for bolds, hex-head lag screws, etc. Basically, this turns your drill into a powered socket wrench, and these things are lovely. I recently used mine to drive large lag screws into walls studs to hang some heavy duty shelves designed for serious weight, and I didn’t have drill a single pilot hole or rachet anything.
They can also be used to drive nuts for mechanical operations. Good stuff.
Sizes: 1/4, 5/16, 3/8, 7/16, 1/2″
Another way to go about this would be to get a 1/4″ socket adapter for your drill and use your socket wrench set.
- 5-piece Milwaukee Magnetic Nut Driver Set
- DEWALT DW2542IR 1/4-Inch Hex Shank to 3/8-Inch IMPACT READY Socket Adaptor
- TEKTON 2938 Quick-Change Power Nut Driver Bit Set with Detents, 14-Piece
Torx or Star Driver
This are the newest style driver heads, and they’re awesome for high torque tools like impact drivers and modern Li Ion drills. Many outdoor screws feature Torx heads, and I find they’re increasingly common on machine and power tool parts, which are factory assembled with high powered tools. For example, I recently changed the blades on my thickness planer, and the only way I could loosen the factory-tightened Torx screw without banging up my hand was with my right-angle driver and a Torx bit.
If you buy a box of decking screws, they’ll likely throw in a free driver bit, but having a dedicated set of quick-change bits will save you when the need pops up.
Recommended Torx/Star Driver Bits
- Milwaukee Shockwave Impact Duty Drill and Drive Set (45-Piece)
- IRWIN Tools IMPACT Performance Series Double-Ended Screwdriver Power Bit, TORX, 2 3/8-inch length, 5-Piece Set
Which Impact Driver Bits Should You Buy?
I’ve assembled a collection of these bits over the years piece by piece. If I were starting over:
1. I’d probably buy one of these collections designed for use in impact drivers.
Presumably, the impact driver part means they’re designed from “impact strength” steel intended for high torque and hammering action. I have no idea if that’s actually true, but it seems worth a dollar or two more to me.
2. I’d supplement that with a longer slotted and Phillips driver set for tough to reach tasks:
3. I’d get a dedicated hex nut driver set in common sizes:
4. And I’d get a packet of 2″ quick change #2 and #3 Phillips and slotted bits to store on my drill and drivers bit-keepers:
- DEWALT DW2115 #2 Phillips 2-Inch Power Bit (5-Pack) and equivalent
Have fun. Go make stuff.