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What is the difference between a Phillips and a flat head screwdriver?

Author

Noah Mitchell

Published Jan 20, 2026

A flathead has a single blade, and a Phillips has two blades in the shape of a cross. Attempts to use a flathead tool on a screw designed for a Phillips usually won't be successful, and a Phillips screwdriver could never be used on a slotted screw.

What is a flat head screwdriver used for?

Flathead Screwdriver

The slot or flat-headed screwdriver is probably the most common form of hand tool. It has a flattened tip used for screws with a straight linear intrusion across the head.

Do you need the Phillips head or flat?

Flat drive screws allow more torque and are an older type but, the screw driver has a tendency to slip out the sides. Philips drive screws are self centering but are designed to skip if a high torque is applied. Torx drive can take high torque and stay in the screw but are more expensive and not very common.

What is the proper name for a flat head screwdriver?

Everyone knows what a flathead screwdriver looks like, but that is actually not the correct term. This type of driver is technically known as a standard or slotted screwdriver.

Why is a Phillips head screwdriver called a Phillips head?

Henry Frank Phillips (June 4, 1889 – April 13, 1958) was an American businessman from Portland, Oregon. The Phillips-head ("crosshead") screw and screwdriver are named after him.

35 related questions found

What is a Phillips head screwdriver?

Definition of Phillips-head screwdriver

: a screwdriver that is designed to be used with a type of screw (called a Phillips-head screw) that has a slot in its top that looks like a cross.

Why are there Phillips and flat head screws?

The reason for the different styles is cost and torque. Phillips screws are self-centering, making powered screwdrivers possible. They're somewhat more expensive to produce than slotted-head. They tend to 'cam-out' easily under torque, making it hard to apply much torque.

What does a Phillip head screwdriver look like?

A Phillips screwdriver has a head with pointed edges in the shape of a cross, which fit neatly into the cross slots of a Phillips screw. You can buy a Phillips screwdriver in five different sizes, ranging from zero to four, with four being the largest.

Why are there flat head and Phillips head screws?

Phillips patented the Phillips head screw, which self-centers the screwdriver, making it easier to effectively place the screw quickly. This screw head type is arguably the most commonly found in nearly any application. Not only do electric screwdrivers speed up the process, they also help ensure the screw is straight.

What is Philips screw?

: a screwdriver that is designed to be used with a type of screw (called a Phillips-head screw) that has a slot in its top that looks like a cross.

What can I use if I don't have a Phillips?

Flathead screwdriver

If the only screwdriver you own is flat-headed, you can use this to remove Phillips head screws. Insert the end of the screwdriver into the longer of the two grooves and turn it counter-clockwise.

What is the difference of Philips screw and star screw?

The crosshead style of screw is best suited for power driving. Phillips and posidrive screws are two types of crosshead screws, different from each other in that the Phillips screw head has four cross points and the posidrive screw head has a star with eight points.

What are flat head screws?

Flat head screws are characterized by having a head with a flat top and bottom that is cone shaped or countersunk. With this design, the head of the screw can align flush or below the surrounding surface having obvious benefits.

What are the 3 types of screwdriver?

Types of Screwdriver Heads

  • Phillips Head. AKA: Cross head screwdriver. If you only own one screwdriver, this is the one you want. ...
  • Flat Head. AKA: Straight head, flat blade, slotted screwdriver. ...
  • Allen Wrench. AKA: Hex key, Allen key, hex screwdriver, Ikea wrench.

How can you tell the difference between Phillips and Pozidriv?

How to instantly identify a Phillips vs Pozidriv screw head. The easiest way to know whether a screw is Phillips or Pozidriv is that all Pozidriv screws have lines etched the screw head in-between the four arms of the cross. This visual aid means that you can instantly recognise a whether a screw is a Pozidriv or not.

What type of screwdriver is used by electrician?

The two most common electrician's screwdriver models used are the Phillips head driver and the flat head, or blade-style, driver.

Why are there different Screwheads?

Answer: The primary reason for the wide variety of screw head drive types is to ensure the fact that you will never have the proper screwdriver close at hand when you need it.

What are the 4 different types of screw heads?

Types of Screw Heads/Screw Drives

  • Step 1: Slotted. Slotted screws are the simplest type of screw, consisting of a single slot at the head of the screw. ...
  • Step 2: Phillips. The Phillips screw, named after Henry F. ...
  • Step 3: Square Aka "Robertson" ...
  • Step 4: Torx Aka "Star" ...
  • 19 Comments.

Why are Phillips head screws so common?

Because the Phillips screws integrate cross-shaped grooves over the head, it means builders have a greater surface area to work with. The grooves in the head make it easier to use a screwdriver, especially when you're forced to maneuver a fastener in tight spaces.

What is a flat blade screwdriver?

Slotted screwdrivers, also known as a flat head or flat blade screwdrivers, have a flat blade tip at the end of the shaft that is inserted into the single horizontal groove (the slot) in the fastener head and the handle is turned to rotate the screw. They can come in two blade profiles: keystone and cabinet.

What are the different types of screwdrivers?

  • Types of Screwdriver.
  • Flat Head (or Slotted Head) Screwdriver.
  • Phillips Screwdriver.
  • Pozidriv Screwdriver.
  • Robertson or Square Screwdriver.
  • Torx Screwdriver.
  • Hex Screwdriver or Hexagon Screwdriver.

What is a flat head tool?

A flat-head screwdriver is a screwdriver with a wedge-shaped flat tip, used to tighten or loosen screws that have a straight, linear notch in their heads. This is arguably the most common tool on the planet—the ubiquitous flat-head screwdriver.

Why do deck screws have star heads?

The Star (also known as Torx) has a six-point, star-shaped drive that was developed mainly to enhance tamper resistance and ensure snug fits. The star design drivers cut down on the risk stripping the screw heads, slippage, or cam-outs, with tight, specific fits.

How do you unscrew a tiny Phillips screw without a screwdriver?

Grasp the nail with a pair of pliers to turn it. You can even try using a hammer to tap the nail into the tiny screws, improving the grip. You could also try working with a drill and drill bit. Take the same hammer you used for the nail and tap the drill bit into the screw.