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How many different types of screw heads are there?
The two basic screw head types, countersunk and non-countersunk, include various unique designs. Your chosen head shape or style can either serve a functional or decorative purpose. The drive recess or style is ultimately based on the tool you use during installation.
What are the 6 common types of screw heads?
6 Common Types of Screw Drives
- #1) Phillips-Head. Arguably, the most common type of screw drive is Phillips head.
- #2) Flat-Head. Also known as a slot drive, a flat-head screw lives up to its namesake by supporting the use of a flat-head screwdriver.
- #3) Hex.
- #4) Torx.
- #5) Double Hex.
- #6) Robertson.
Why are there so many types of 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.
Why are some screws Phillips?
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.
Why are there so many types of screw heads?
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.
Why are there Phillips and flat head screws?
Why are there different types of machine screw heads?
What are Torx screws?
A Torx screw is a type of screw characterized by a six-lobed, star-patterned screw drive. Torx is available as an internal and external drive although it is most commonly used as a socket within the head (internal). Torx screws were invented in 1967, by Camcar Textron, as an improvement on contemporary drive types.