The Ultimate Guide to Different Types of Screw Head Styles

Screws are versatile fasteners used in various applications, and they come in different types with specific head designs. The head of a screw determines the tool required for installation or removal. Here are some common types of screw heads:

1. Flathead (Slotted)

Flathead screws have a single straight slot on top of the head, requiring a flathead screwdriver for installation or removal. They are one of the oldest and most basic types of screw heads. Flathead screws are commonly used in woodworking and general applications.

2. Phillips

Phillips screws have a cross-shaped indentation on the head, requiring a Phillips screwdriver. They are widely used in many industries and applications. The cross-shaped design provides better torque transfer and helps prevent the screwdriver from slipping out of the screw head.

3. Pozidriv

Pozidriv screws resemble Phillips screws but have additional smaller cross points between the main cross slots. They require a Pozidriv screwdriver, which has a slightly different tip design. Pozidriv screws provide improved torque transfer and reduced cam-out, making them suitable for high-torque applications.

4. Torx (Star)

Torx screws have a six-point star-shaped pattern on the head. They provide better torque transfer and are less prone to cam-out compared to other screw types. Torx screws are commonly used in automotive, electronics, and high-torque applications. The corresponding tool is a Torx screwdriver or wrench.

5. Hex (Allen)

Hex screws have a hexagonal recess on the head, requiring an Allen wrench (also known as a hex key) for installation or removal. They provide a high level of torque transmission and are commonly used in furniture assembly, machinery, and automotive applications.

6. Square (Robertson)

Square screws, also known as Robertson screws, have a square-shaped recess on the head. They require a square-drive screwdriver or bit. Square screws offer excellent torque transfer and are widely used in woodworking, construction, and automotive applications.

7. Combination (Combination Slotted/Phillips)

Combination screws feature a combination of a slotted and Phillips drive on the same head. They allow for the use of either a slotted or Phillips screwdriver, providing flexibility in installation or removal.

These are just a few examples of the various types of screw heads available. Each type has its own advantages and is suitable for specific applications. It’s important to select the appropriate screw head based on the requirements of your project and the recommended tools for installation or removal.