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What the tool needs to do
Concrete screws are not installed by drilling the screw straight into masonry. You first drill a pilot hole to the diameter and depth specified for the screw, clear out the dust, then drive the fastener. For that first step, a cordless hammer drill is useful: its rotating bit also pulses forward, helping a masonry bit cut into concrete. The hammer action is for drilling, not driving the screw.
For typical jobs—attaching a bracket, ledger, or light fixture—a quality 18V or 20V cordless hammer drill can do the work. A compact 12V model may suit occasional small holes, but it can slow down or struggle in hard concrete, especially with larger bits. If you regularly drill holes over about 1/2 inch in diameter, or need many deep holes, an SDS-plus rotary hammer is usually the better tool. Its hammer mechanism is built for sustained masonry drilling and is less tiring to use.
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What to look for when buying
Check the drill’s maximum capacity in concrete, but don’t treat that number as a promise of fast drilling. Manufacturers’ capacity figures vary, and a drill’s performance depends on the concrete, bit condition, hole depth, and battery. For concrete screw pilots, the screw maker’s instructions matter more: they specify the bit diameter and minimum hole depth. A hole that is too small can make the screw bind or break; one that is too large may not hold.
A two-speed gearbox is useful. Low gear gives better control when drilling larger holes or driving screws; high gear is suited to smaller bits. A side handle helps resist the drill’s twisting force, and a clutch helps prevent overdriving during fastening. Check that the hammer mode can be switched off: use it for masonry, but not for ordinary wood or metal drilling. Brushless motors can improve runtime and tool life, but a brushed drill can still be a sensible buy for occasional repairs.
Cordless options compared
| Tool type | Best fit | Trade-off |
|---|---|---|
| 12V hammer drill | Occasional small pilot holes in softer or less dense masonry | Lower weight, but may drill slowly and have limited battery endurance |
| 18V/20V hammer drill | Most home and trade concrete-screw jobs with common pilot-hole sizes | Versatile, though repeated deep holes can be tiring and hard on batteries |
| SDS-plus rotary hammer | Frequent holes, larger diameters, or hard concrete | Drills masonry faster, but costs more and is less suited to general screw driving |
For a first cordless setup, compare 18V cordless hammer drill kits in the battery system you already own, if you have one. A kit with two batteries is useful for long sessions, but not essential for installing a few fasteners. If you already have a compatible drill and only need a masonry tool for regular work, consider an SDS-plus cordless rotary hammer instead.
Bits and batteries matter
Use a carbide-tipped masonry bit in the precise diameter required by the concrete screw. A worn or overheated bit cuts slowly, wanders, and can leave a rough or undersized hole. Replace it if the carbide tip is chipped or rounded. For clean, straight starts, mark the location with a punch or a small starter indentation where appropriate, then begin at low speed before increasing pressure.
Battery capacity is measured in amp-hours (Ah). A 2Ah pack is lighter and often adequate for a handful of holes; a 4Ah or 5Ah pack provides more runtime but adds weight. Cold batteries and repeated drilling in dense concrete reduce performance. If the drill slows noticeably, let the tool and battery cool rather than forcing the bit. A spare battery is more practical than buying the highest-capacity pack if you want to keep working without a long pause.
Drill and drive without damaging the fastener
Confirm there are no wires, pipes, or other services behind the drilling point. Wear eye protection and hearing protection, and use a suitable dust mask. Concrete dust is hazardous; a vacuum attachment or a helper vacuuming near the hole reduces the amount you breathe. Set a depth stop or mark the bit with tape, allowing for the extra depth the screw manufacturer specifies so dust at the bottom does not prevent full insertion.
Hold the drill square to the surface and let the hammer action do the work. Apply steady pressure, not a heavy push. Pull the bit out periodically to clear dust, particularly in deeper holes. After drilling, remove the dust from the hole according to the fastener instructions; packed dust can reduce holding strength. If the bit suddenly stops, the drill kicks, or you hit a hard inclusion, release the trigger and check the hole rather than leaning harder.
Switch off hammer mode before driving the concrete screw. Use a compatible driver bit and a controlled speed, stopping when the head seats. An impact driver can drive some concrete screws, but its extra torque can snap a screw or strip the recess if you do not control it. A drill’s clutch often makes it easier to stop consistently. If the screw binds before seating, back it out and check for dust, insufficient depth, or a pilot hole that is too small. Do not force it: a damaged screw or enlarged hole may no longer provide a dependable fixing.
When a cheaper drill is enough
For several small holes in ordinary concrete each year, a basic 18V hammer drill with a good battery and a fresh bit is usually sufficient. Spending more on a premium brushless model is easier to justify if you drill often, work overhead, or need better runtime and balance. A budget drill is a poor economy if it stalls repeatedly in the material you actually have; in that case, borrow or buy an SDS-plus rotary hammer rather than pushing the tool beyond its comfortable range.