Buzz
The Phillips head screwdriver was invented by Henry Phillips during the 1930s and gained prominence in the 1936 Cadillac. Jordan Lye / Getty ImagesKey Points
- The Phillips head screwdriver, designed by Henry Phillips in the 1930s, has a cross-shaped tip that fits into the matching cross slots of Phillips screws, ensuring a snug, self-aligning connection.
- Phillips screwdrivers come in sizes 0 to 4, with 4 being the largest, and are vital for various construction and repair projects, especially where a precise fit between the screwdriver and screw is needed.
- Thanks to their resistance to slipping out of the screw's slot, Phillips screws and screwdrivers are indispensable tools in manufacturing and construction industries.
The Phillips head screwdriver was developed and patented by Henry Phillips in the 1930s, originally designed for use on the 1936 Cadillac. Unlike the flathead screw, which has a single ridge at its tip to fit into a screw with one slot, the Phillips screwdriver is self-aligning. Its "X" design ensures that it won't slip out of the X-shaped slot in the screw, instead gripping it securely in the center, provided the size is correct for the screw.
A Phillips screwdriver has a cross-shaped head that fits perfectly into the cross slots of a Phillips screw. They come in five sizes, ranging from zero to four, with four being the largest. If you enjoy DIY projects, you'll likely need several Phillips screwdrivers in different sizes, and having a cordless electric Phillips screwdriver can be very convenient. Phillips screws offer a tighter fit than flathead screws, which is why they are commonly used in factories and by handymen. These screws are typically lightweight and small.
The key is to choose the right screwdriver for the type and size of screws you're working with. The screw type you select depends on the job you're doing. For most power driving tasks, use crosshead screws, which include both Phillips and posidrive screws. For carpentry and joinery, opt for single-slot screws. Only use a Phillips screwdriver for Phillips screws.
If you're unsure which screwdriver to use, proceed gently when you start driving it. If your screwdriver begins to wobble or slip out of the screw, it's a sign that you've selected the wrong type or size screwdriver.
