What Are Combination Screws?

What Are Combination Screws?

Postview: 73       Date:February 20, 2024

Combination screws are types of fasteners designed with heads that are compatible with more than one type of screwdriver or driving tool. This dual-compatibility feature means that the head of a combination screw has slots or recesses that accommodate different types of drive systems. The most common combinations include:

Phillips/Slotted (Flathead): These screws have a head that can be driven by either a Phillips screwdriver or a flathead screwdriver. This is one of the most common types of combination screws, offering flexibility in use with the two most standard screwdriver types available.

Torx/Hex: Some combination screws are designed to accommodate both Torx (star-shaped) and hex (Allen) drivers. This combination is less common but useful in applications where higher torque is needed, and the specific driver type might vary.

Square/Phillips (Robertson/Phillips): These screws can be driven by either a square (Robertson) driver or a Phillips screwdriver. This combination is particularly popular in Canada and the United States, where both drive types are widely used.

Pozi/Slotted: This type combines a Pozidriv drive system with a traditional slotted drive, offering more engagement points than a standard Phillips/slotted combination, which can reduce cam-out (slipping).

The design of combination screws offers significant practical benefits, making them versatile choices for a wide range of applications across different industries, including construction, woodworking, electronics, and automotive repair. Their adaptability allows users to work with whichever tool is at hand, reducing the need for specific drivers and making the assembly or repair process more convenient and efficient. However, it’s essential to choose the right driver to apply adequate torque without damaging the screw head, especially in precision applications.

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