Phillips screwdriver: a complete guide to sizes and uses
A phillips screwdriver is one of the first tools most people buy. It fits the cross-shaped screws used in furniture, appliances, electronics, light fittings, and toys, so it is useful in almost every home.
This guide explains what a phillips screwdriver is, how the cross head works, what sizes such as PH0, PH1, PH2, and PH3 mean, and how it compares with a flat head screwdriver. It also covers cam-out, length and handle choice, magnetic tips, and buying a single driver or a set. For a wider look, see our guide to the screwdriver.
What is a phillips screwdriver?
A phillips screwdriver is a hand tool with a cross-shaped tip that fits into a matching cross-shaped recess in a screw head. The four arms of the cross sit in the four slots of the screw, so turning the handle turns the screw clockwise to tighten it or anticlockwise to loosen it.
It usually has a handle, a metal shaft, and a tip. Some models have a fixed tip, while others use interchangeable bits in one handle. A phillips head screwdriver is the same tool, described by its tip shape.
The cross shape centres itself in the screw more easily than a single straight slot. That makes it easier to start a screw and to work in awkward places, such as inside a cabinet. You will find phillips screws in door hinges, drawer runners, electrical faceplates, light switches, shelving brackets, and kitchen appliances.
How the cross head works
The cross head spreads turning force across four contact points instead of one or two. When you turn the handle, each arm of the cross pushes against the side of its slot. That gives a more even grip than a single slot and helps the tip stay centred.
The shape also helps with alignment: if you place the tip slightly off centre, the cross tends to guide itself into the recess as you press gently and turn.
There is one trade-off. The sides of the cross recess are slightly tapered, so under high force the tip can ride up and out of the screw. This is called cam-out. Choose a tip that fills the recess fully, hold the driver straight, and press firmly while you turn. A good fit should feel snug, with little or no wobble.
phillips screwdriver sizes explained
Size matters with a phillips screwdriver. A tip that is too small will slip and damage the screw head. A tip that is too large will not seat fully and will also slip. The right size fills the cross, sits flat in the screw, and turns without rocking.
Sizes are marked PH0, PH1, PH2, and PH3, with smaller numbers for smaller screws. The most common size for general home use is PH2. It fits many screws in furniture, hinges, brackets, and appliances. PH1 is for smaller screws, PH0 is for very small screws in electronics and small devices, and PH3 is for larger screws in heavy brackets and larger fixings.
| Size | Typical use |
|---|---|
| PH0 | Electronics, small devices, toys, and small appliances |
| PH1 | Small furniture, electrical fittings, toys, and light fixtures |
| PH2 | Furniture, hinges, brackets, appliances, and general DIY |
| PH3 | Heavy brackets, larger fixings, and construction work |
If you are unsure which size fits, try the size you think is right and check for movement. A correct phillips head screwdriver should sit with the tip fully seated and the shaft in line with the screw. If it rocks or feels loose, try the next size up or down.
Length is a separate choice from tip size. A longer shaft reaches screws in deep places, while a shorter shaft gives more control in tight spaces. A common example of how size and length are shown together is stanley philips screwdriver #2, 7-1/4″ oal, where #2 shows the tip size and 7-1/4″ oal shows the overall length.
phillips screwdriver vs flat head screwdriver
A flat head screwdriver has a single straight blade that fits into a single straight slot in the screw head. A phillips screwdriver has a cross tip that fits into a cross recess. That difference changes how each tool grips, centres, and slips.
A phillips head screwdriver is usually easier to centre and start, because the cross guides the tip into place. A flat head screwdriver can work well in a straight slot, but it is easier to slip sideways out of the slot, especially if the blade is worn or the wrong width.
| Feature | phillips screwdriver | flat head screwdriver |
|---|---|---|
| Tip shape | Cross | Single straight blade |
| Screw head | Cross recess | Straight slot |
| Centring | Easier to centre | Harder to keep centred |
| Grip | Four contact points | Two contact edges |
| Common uses | Furniture, appliances, electronics, and general DIY | Older fixings, simple brackets, and some electrical work |
Neither tool replaces the other. Many homes have both kinds of screws, so a toolkit should include both. Using the wrong tip can damage the screw head. For screws with a star-shaped recess, see our guide to the torx screwdriver.
When to use a phillips screwdriver
Use a phillips screwdriver when the screw has a cross recess. That simple rule covers most home and DIY work: assembling furniture, fitting hinges and handles, fixing brackets and shelving, replacing a light switch or socket faceplate, opening a battery cover, and tightening screws on appliances and toys.
It is also a good choice when you need to drive several screws in a row. For larger jobs with many screws, an electric screwdriver with a phillips bit can save time, but a hand driver gives more control for small or delicate work. Do not use it as a chisel, a pry bar, or a punch.
How to avoid cam-out and stripping
Cam-out happens when the tip rides up out of the screw under turning force. Stripping happens when the recess is worn away so the tip can no longer grip. Both are usually caused by the wrong size, poor alignment, or too much speed and force.
To reduce the risk:
- Choose the right size. The tip should fill the cross with no visible gap and no rocking.
- Hold the driver straight. Keep the shaft in line with the screw. An angled driver puts force on one side of the recess.
- Press firmly while you turn. Steady pressure keeps the tip seated. Press straight along the shaft, not sideways.
- Turn slowly at first. This matters most for old, painted, or rusted screws.
- Stop when the screw is tight. Over-tightening increases cam-out and can strip the head.
- Replace worn tips. A rounded or chipped tip will slip more easily.
If a screw head is already damaged, try a larger tip that fills what is left of the recess, and turn very slowly. Do not keep forcing it.
Choosing length and handle
A standard medium driver, with about 100 mm of shaft, suits most home jobs. A longer driver reaches screws inside deep furniture or in recessed fittings. A shorter, stubby driver fits in tight spaces, such as inside a drawer unit, where a full-length driver will not turn.
When you compare products, check the overall length as well as the shaft length. A product name such as stanley philips screwdriver #2, 7-1/4″ oal is an example of that combined naming: the #2 tells you the tip size, and the overall length tells you how long the whole tool is from the end of the handle to the tip.
Look for a handle that fits your hand, a shape that will not roll off a bench, and a grip that stays secure when your hands are dry. Larger hands suit a thicker handle; smaller hands suit a slimmer one.
Magnetic tips: are they worth it?
A magnetic tip holds a steel screw on the end of the driver, so you can place the screw with one hand and start it without it falling. This is helpful when you are working above your head, inside a cabinet, or where a dropped screw is hard to retrieve.
Magnetic tips are useful, but not essential for every job. They can attract metal dust, so wipe the tip clean from time to time, and they are less helpful for non-magnetic screws, such as some brass or stainless steel screws. If you work with electronics, check whether a magnetic tip is suitable for the device.
A set or a single driver?
A single phillips screwdriver is enough if you only need one size for one job. It is cheaper, simpler, and easy to store.
A set is a better choice for most households. A screwdriver set with PH0, PH1, and PH2, plus a flat head screwdriver in two sizes, covers most screws you will meet at home, in different shaft lengths. A set with interchangeable bits can be more compact, but fixed drivers are often stronger. For powered work, see our guide to the best electric screwdriver.
Buying advice
Before you buy, look at the screws you already have at home. Check furniture, hinges, appliances, and light fittings, and note whether most screws are cross-headed and what size they appear to be. That will tell you whether PH1 or PH2 should be your first purchase.
Then check these points: the PH size should be printed clearly; the tip should be clean, sharp, and free from chips; the shaft should feel straight and solid; the handle should fit your hand; and the length should reach your screws. A set with a holder or case is easier to keep together.
Very cheap drivers often have softer tips that wear quickly. A mid-priced driver from a known brand, bought in the size you use most, is a sensible starting point. You can add other sizes later.
Frequently asked questions
What is a phillips screwdriver used for?
A phillips screwdriver turns screws with a cross-shaped recess, for furniture assembly, hinges, brackets, appliances, light fittings, and electronics.
What do PH0, PH1, PH2, and PH3 mean?
These are size marks for a phillips head screwdriver. PH0 is the smallest, PH1 is small, PH2 is medium and the most common size for home use, and PH3 is large. The number should match the size of the screw head.
What is the difference between a phillips screwdriver and a flat head screwdriver?
A phillips screwdriver has a cross tip for cross-headed screws, while a flat head screwdriver has a straight blade for screws with a single straight slot. The cross tip is usually easier to centre.
Why does my phillips screwdriver keep slipping?
Slipping is often caused by the wrong size, a worn tip, poor alignment, or too little pressure. Check the fit, hold the driver straight, press firmly, and turn slowly. Replace the driver if the tip is rounded or chipped.
Should I buy a magnetic phillips screwdriver?
A magnetic tip holds the screw in place while you start it, which helps in awkward places or above your head. It is not essential for every job.
Is a stanley philips screwdriver #2, 7-1/4″ oal a common size?
Yes, as a naming example it shows a common pattern: a #2 tip size, the medium size used for many home jobs, with an overall length of 7-1/4″ oal.
Conclusion
A phillips screwdriver is a simple tool, but choosing the right size and using it well makes a real difference. Match the tip to the screw, hold the driver straight, press firmly, and turn slowly. That will reduce cam-out, protect the screw head, and make home and DIY jobs easier.
Start with a PH2 driver for general use, add PH1 and PH0 for smaller work, and keep a flat head screwdriver alongside it for straight-slotted screws.
