ThePipingMart Blog Fasteners Grub Screw Vs Regular Screw – What’s the Difference?

Grub Screw Vs Regular Screw – What’s the Difference?

Grub Screw Vs Regular Screw - What’s the Difference?

When working on projects that require fastening two components together, such as furniture assembly, it’s important to choose the right type of screw to ensure a secure and stable outcome. Two popular types of screws used in such projects are grub screws and regular screws. At first glance, they may look similar, but there are some notable differences between the two. In this blog post, we take a closer look at grub screws vs regular screws and examine their unique properties, applications, advantages, and disadvantages.

What is a Grub Screw?

A grub screw, also known as a set screw, is a type of screw that has no head and is usually used to secure two components together. Instead of a head, the grub screw features a hexagonal socket or Allen key. The socket enables you to tighten or loosen the screw by turning it with an Allen wrench. Grub screws are available in different threads, lengths, diameters, and materials, including stainless steel, brass, and zinc-plated steel.

Grub Screws Have Several Advantages:

They are simple to use and install.

They are discreet and do not take up much space.

They are ideal for use in tight spaces where access is limited.

They can handle a high axial load and therefore provide a reliable and secure connection.

However, the main disadvantage of grub screws is that they do not resist rotation and can be easily removed by an external force, unless they are installed in a recess or drilled hole.

What is a Regular Screw?

A regular screw is a type of screw that consists of a head, a shank, and a threaded body. The head can be of various shapes, including flat, oval, or domed. The shank is the unthreaded part of the screw that determines the length of the screw, while the threaded body cuts into the material and provides the holding power. Regular screws are available in different materials, such as stainless steel, brass, and galvanized steel, and come in various sizes, length, and thread patterns.

Regular Screws have Several Advantages:

They provide high bearing strength and can withstand a significant load.

They resist rotation and remain in place even under lateral pressure.

They are easy to remove if needed with a screwdriver.

However, regular screws also have some disadvantages, mainly their relatively large diameter, which can leave visible holes and weaken the material they are fastened to.

Applications of Grub Screws

Grub screws are commonly used in various industries, such as electronics, automotive, machinery, and furniture assembly, to secure components together. They are ideal for creating a flush, unobtrusive surface and are often used in applications where appearance and accessibility are important. Some examples of grub screw applications include holding gears on shafts, locking bearings in place, and connecting pipes and fittings.

Applications of Regular Screws

Regular screws are used in a wide range of applications, from household repairs to manufacturing processes. They can be used to fasten wood, metal, plastic, and other materials together. Some examples of regular screw applications include securing hinges, attaching furniture legs, installing shelf brackets, and assembling electronics.

When to Use Which Screw?

Choosing which screw to use mainly depends on the specific application, the material you are fastening to, and the stability required. If you need a fastener that is discreet, visually appealing, and works best in tight spaces, consider using a grub screw. If you require high bearing strength, resistance to rotation and lateral pressure, and do not mind visible holes, then a regular screw will be the better option.


In conclusion, while grub screws and regular screws may appear similar, they offer unique advantages and disadvantages depending on the application at hand. It’s important to consider all the factors when deciding on the appropriate screw for your project. Always evaluate the material you are fastening, the strength required, and the appearance you desire. With this information, you can confidently choose from either grub screws or regular screws and achieve a secure and stable outcome.

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