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Long screws are easy to start badly. A bit that wobbles, a driver that spins too fast, or a screw forced into a knot can round the recess before the head is even close to the surface. The fix is usually better setup and steadier pressure—not simply more torque.
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Choose the right driver
A cordless drill can drive long screws, especially in softwood or when you predrill. An impact driver is often easier for repeated driving because its short bursts of rotational force help keep the screw moving without requiring as much force on the tool. It is also noisy, and its high torque can snap small screws or bury heads if you are careless.
For a few screws in a softwood project, a basic drill and a sound driver bit are usually enough. For a deck, framing job, or frequent work with screws longer than about 3 inches, an impact driver is a worthwhile category to consider. Compare cordless impact drivers by battery platform, speed control, and how comfortably the tool fits your hand—not just maximum torque.
| Tool | Best fit | Trade-off |
|---|---|---|
| Cordless drill | Occasional screws, pilot holes, delicate work | May need more steady pushing; can twist your wrist if a long screw binds |
| Impact driver | Many long screws, dense lumber, outdoor projects | Noisy and powerful; easier to overdrive or break a screw |
| Manual screwdriver | Final snugging or a very small number of screws | Slow, but gives excellent control near the surface |
Match the bit to the screw
A poorly fitting bit is a common cause of stripped heads. Use the driver style and size specified by the screw maker. A Phillips bit in a Pozidriv recess, or a bit that is one size too small, can cam out under load. Torx-style star recesses generally hold the bit more securely than Phillips, but even a Torx screw strips if the bit is worn, undersized, or held at an angle.
Check that the bit seats fully and does not rock. Replace rounded or chipped bits; they are cheap compared with a damaged fastener or a stalled project. For frequent driving, buy a set of impact-rated driver bits in the screw sizes you actually use. Torsion bits can tolerate repeated impact better than ordinary bits, but they will not correct a bad fit or poor technique.
Prepare the hole and wood
Long screws displace a lot of material. In hardwood, near board ends, or when joining thick pieces, drill a pilot hole to reduce splitting and the torque needed to drive the screw. The pilot should match the screw’s core diameter—the solid shaft between the threads—not the full thread diameter. Check the screw packaging or manufacturer’s chart if available. When joining two pieces, a clearance hole through the top piece can help pull the boards tight rather than letting the screw threads bind in both pieces.
Stay at least about 1 inch from the end of a board when practical, and farther for narrow stock or brittle wood. If a board still wants to split, use a longer distance from the edge, a pilot hole, or a different fastening plan. Wax made for screws can reduce friction in wood; avoid relying on it as a substitute for a pilot hole in hardwood.
Drive with control
Put the bit straight into the recess, set the screw tip firmly against the surface, and start at low speed. Keep the tool’s axis aligned with the screw. Press firmly enough to keep the bit seated, but do not lean so hard that you cannot control the tool. Once the threads have caught and the screw is moving steadily, increase speed if needed.
On a drill, begin in a low gear for more control. If the drill has a clutch, start with a moderate setting and raise it only if the tool stops before the screw is seated. Clutch numbers are not standardized, so test on scrap. For an impact driver, use a low-speed or assist mode if fitted, and ease off as the head nears the surface. Stop when the head is seated; another burst can strip the recess, snap the screw, or crush the material.
If the screw slows sharply, the bit starts climbing out, or the tool twists in your hand, stop. Back the screw out if possible, clear the hole, check the bit, and add a pilot hole or move to a more suitable screw. Holding the trigger down harder is a reliable way to damage the head.
Set depth and avoid overdriving
For visible work, practice on an offcut of the same material and stop the head flush or at the specified depth. A drill’s clutch can help with repeatable fastening, but it is not a depth stop; wood density and screw length change the force required. An impact driver takes more attention because it may deliver force in short pulses after the screw feels nearly seated.
If several screws must finish at the same depth, consider a depth-setting attachment or a drill with a suitable depth stop. These can improve consistency in repetitive work, though a depth stop may be awkward on a large screw or uneven surface. For a small repair, careful trigger control and a scrap test are usually the cheaper, simpler choice.
Recover from a stripped head
Stop as soon as the bit begins to slip. Try a fresh, correctly sized bit and steady pressure; sometimes the recess still has enough shape to engage. If the head stands proud, locking pliers may grip its edge. For a flush or recessed damaged screw, a screw extractor can work, but it requires drilling and can be slow. A damaged fastener in a critical joint may be safer to remove and replace than to force farther in.
Use a screw designed for the material and job. General-purpose wood screws are fine for many indoor projects; exterior-rated structural or deck screws are the better choice where the load, exposure, or local code calls for them. The right driver, a close-fitting bit, and a pilot hole where needed prevent more stripped heads than buying the most powerful tool.