Reach for the wrong driver and you’ll strip a screw head in seconds, turning a five-minute job into a frustrating mess of pliers and drilled-out fasteners. Knowing the common screw driver types and matching each to the right screw is one of the most useful skills a homeowner can have. From assembling flat-pack furniture to swapping an outlet cover, the right driver makes every job faster, cleaner, and far less aggravating.
Flathead Screwdrivers
The flathead, or slotted driver, is the original and simplest design, with a single flat blade that fits into a straight slot. You’ll find it on older fixtures, light switch terminals, and some furniture.
Its weakness is that the blade easily slips out of the slot, called cam-out, especially under torque. Flatheads come in several blade widths, and using one that matches the slot length is key to avoiding slippage and damage. Despite being dated, a couple of flatheads still earn a spot in every toolbox.
Phillips Screwdrivers
The Phillips driver, with its cross-shaped tip, is the most common type in American homes. The self-centering design seats the tip quickly and works well for general assembly, drywall, and countless household fasteners.
Phillips drivers are sized by number, from #0 for tiny screws up to #4 for large ones, with #2 being the workhorse that fits most household screws. The design intentionally cams out under high torque to prevent overtightening, which is helpful with power tools but means you should match the size precisely to avoid stripping.
Specialty Drive Types
Beyond the two basics, several specialized drives have become common as products and electronics evolve. Each solves a particular problem of grip, torque, or tamper resistance.
- Torx (star): A six-pointed star that grips firmly and resists cam-out, common in electronics, automotive, and appliances.
- Hex (Allen): A six-sided recess used in furniture, bike parts, and machinery, often turned with an L-shaped key.
- Robertson (square): A square recess popular in Canada and in woodworking, offering excellent grip.
- Pozidriv: Similar to Phillips but with extra contact points for more torque, common in European products.
Security and Tamper-Resistant Heads
Some screws are designed specifically to keep casual users out. Security drive types appear on public fixtures, electronics, and appliances to deter tampering and require specialized bits to remove.
You’ll encounter security Torx with a pin in the center, tri-wing and spanner heads on game consoles and devices, and one-way clutch screws that tighten but resist removal. If you run into one of these while repairing electronics or a public-style fixture, a security bit set covering 30 or more odd drive types costs around $15 to $30 and saves a lot of headaches.
Manual Versus Power Options
How you turn the driver matters as much as the tip. Manual screwdrivers give you fine control and feel, ideal for delicate work, electronics, and final tightening where you don’t want to overdrive.
For bigger jobs, a cordless drill or impact driver with interchangeable bits dramatically speeds the work. A magnetic bit holder keeps screws from falling, and an adjustable clutch prevents stripping and overtightening. Many homeowners keep a multi-bit screwdriver with a handful of interchangeable tips for quick jobs and reserve the power tools for assembly and repetitive driving.
How to Avoid Stripping Screws
Stripped screws are the number one frustration in any project, and almost always preventable. The root cause is usually a driver that doesn’t match the screw, either the wrong type or the wrong size. A #1 Phillips in a #2 screw will cam out and chew up the head every time.
Apply firm, steady downward pressure as you turn, keeping the driver aligned straight with the screw rather than at an angle. Let the tip seat fully before applying torque. When using a power drill, set the clutch to a lower torque setting and let it slip before you overdrive. If a screw starts to strip, stop immediately, switch to a hand driver, and seat it firmly before another attempt.
Caring for Your Screwdrivers
Good tools last a lifetime with minimal care, and well-maintained drivers grip better and slip less. Keep the tips clean and free of grease, which can cause slippage in the screw head.
- Store them organized: A rack or roll keeps tips from getting nicked against other tools.
- Inspect worn tips: Rounded or chewed tips strip screws; replace them or the bit.
- Use the right tool for prying: Never use a screwdriver as a chisel or pry bar, which ruins the tip.
- Keep handles dry: A clean, dry grip gives you the control to avoid cam-out.
Building a Practical Starter Set
You don’t need every driver ever made, just the right core selection. A solid starter kit covers the drives you’ll actually encounter around the house and grows from there as needed.
- Phillips #1 and #2, plus a #0 for electronics.
- Two flatheads, one small and one medium.
- A Torx set (T10 through T25) for appliances and modern hardware.
- A hex key set for furniture and bikes.
- A magnetic bit driver with assorted bits.
A quality multi-bit set runs $20 to $50 and handles the overwhelming majority of household tasks. Once you understand the common screw driver types and keep the right ones on hand, you’ll match the driver to the screw every time, stripping fewer heads and finishing every project faster.
Understanding Screwdriver Sizing
Beyond the drive type, getting the size right is what actually prevents stripped screws, and the sizing systems differ from one type to the next. Phillips drivers use a numbered scale from #0 to #4, with #2 fitting the most common household screws and #1 for smaller ones like those in cabinet hardware and electronics.
Flathead drivers are sized by blade width in fractions of an inch or millimeters, and the blade should fill the slot completely without overhanging the screw head. Torx drivers use a T-number, commonly T10 through T30 around the house, while hex keys are measured by the across-flats width in either metric (3mm, 4mm, 5mm) or SAE fractions. When a screw resists or the driver wobbles in the recess, the size is almost always slightly off, so step up or down until the tip seats snugly. A driver that fits perfectly transfers all your turning force to the screw instead of grinding away at the head.
