/20 Types of Screws and How to Use Them (Ultimate Guide)
types of screws
473 views

20 Types of Screws and How to Use Them (Ultimate Guide)

Just look around you, and you will find the world with all types of screws. Screws are generally used to fix various things, whether wall art on your living room wall or a gearbox in your bike. 

They are also called bolts and fasteners and are installed into materials with the help of different types of machine tools such as hammers or screwdrivers.

There are different types of screws available in the market with additional functionalities, sizes, shapes, and features. You can find round screws, fat screws, thin screws, short screws, long screws, and many more.

Choosing the right type of screws for your mechanical or DIY job is a crucial thing. How would you know that this is the right type of screw for your project or job? 

Here, in this post, we will discuss all types of screws with their uses to give you a better idea. Once you are through with this post, you will come to know almost everything about screws. 

Countersunk Heads

1. Decking Screws

types of screws

Source: amazon.com

If you are working on metal or wood and want to attach wooden or composite boards, you will need decking screws. They are generally made of stainless steel or carbon steel and are available in a wide range of widths and lengths. They serve the purpose brilliantly by fastening boards to frames. 

Decking screws are generally used in the shipbuilding industry, where wooden and metal boards are used. They are also used in fence-building applications and the making of wooden chairs and decking structures. Here, you will not need any pre-drilled holes. 

2. Pan-Head Screws

types of screws

Source: zieglerbolt.com

For metal applications, pan-head screws are generally preferred due to their flat heads and rounded sides. They look similar to oval head screws. However, oval head screws are rounded on top, whereas the pan-head screws have flat heads. These screws are easy to work with and can be used in many DIY applications. 

3. Hex Cap Screws

types of screws

Source: shopify.com

These are large-sized screws with hexagonal heads. Mostly, these screws are used in wooden applications where you want to attach wood or metal to a wooden board. They have small steel threads and are mostly used in interior home decoration and home improvement projects. These screws have a flat washer right under the screw head to offer fastened and precise applications. 

4. Carriage Bolts

types of screws

Source: amcolhardwarett.com

If you are working on a wooden project and want to attach metal to wood, carriage bolts are the ideal screws. They have a domed head that fastens the material and prevents the structure from loosening. Also, it would be challenging to pull them through a wooden construction due to their large head shape. You can also use these carriage bolts in many metal applications, apart from woodworking applications

5. Lag Bolts

types of screws

Source: thdstatic.com

You will need these lag bolts with hexagonal heads for high-impact applications and projects. Check out decks and sidewalls with wood, and you will find these bolts to fasten various boards. One of the reasons these bolts are highly preferred in deck applications is that they are highly durable, durable, and superior. These lag bolts are made of high-carbon steel with an outer layer of galvanized zinc. It prevents rust and corrosion. 

6. Hammer drive screws

types of screws

Source: winzer.com

Hammer driver screws are very popular screws and can be installed into any board with the help of a hammer or mallet. They are similar to self-tapping screws. They have not slotted round heads and are generally used to attach nameplates and signs. They are also preferred for rust-resistant tubular structures. One thing to remember here is that you will need a pre-drilled hole to install these screws to any material. They have a unique design and are highly reliable, durable, and robust. 

7. Squarehead Bolts

types of screws

Source: etsystatic.com

If you have seen hexagonal-shaped cap screws, you will also be able to identify square head screws. Instead of a 6-sided hex head, square head screws have a 4-sided square head. It can be fastened to any board easily with no loosening. They are generally preferred in aesthetic applications such as character additions to new structures. 

8. Socket-Head Cap Screws

Source: bigcommerce.com

Some applications use wrench fasteners that cannot be used to fix screws. Here, you can use socket-head cap screws with features such as inner wrenching and cylindrical shape. Mostly, these types of screws are used in the mining industry, mechanical engineering applications, and automotive industry. Here, you will not need to drill more holes as the application will require only fewer screws. Also, it will reduce the weight of the structure. 

9. Oval Head Screws

types of screws

Source: thdstatic.com

Oval head screws look stylish and aesthetically pleasing. They are used mostly for switch covering and are available in undercut heads or trim heads. The length of these screws is very small, which makes a thread grip longer. Also, when you have finished a particular product and want to make it look appealing, you can use these screws. It will make the product more aesthetically appealing. They are highly durable and strong and are made of stainless steel. 

10. Wood Screws

types of screws

Source: lowes.com

If you are working on a project where you have to connect wood to wood, you will need wood screws with a threaded shaft. They have a wide range of heads that can be used for installment. However, the most preferred wood screws are flat and round heads. They serve the core purpose of attaching thin materials to wood. Also, they are good at securing hinges. They are made of either stainless steel or brass to make them stronger and more durable. 

11. Sheet Metal Screws

different kinds of screws

Source: amazon.com

When you want to fasten two metal sheets together for different metals, you can use these sheet metal types of screws and bolts. When it comes to screw heads, there are various options such as flat, hex, and round. Made from stainless steel, the outer surface of these screws is coated with stainless steel or aluminum. Sheet metal screws are ideal for the welding industry and can be used in many other applications. 

12. Thread-Rolling Screws

different kinds of screws

Source: grainger.com

Generally, we use screws to cut threads into the structure or material. However, when it comes to thread-rolling screws, they exert pressure against the walls of the material to create threads. If you are working on soft materials such as plastic, nylon, wood, and others, these screws are highly preferred in such applications. These screws have a double head thread style. The main reason for this style is to reduce the amount of torque and enhance the total pullout power. It does not let the material crack or damage. 

13. Socket-Head Screws

different kinds of screws

Source: thdstatic.com

In applications requiring a joint, you can use these socket-head screws. They are highly strong, durable, long-lasting, and corrosion-resistant. Also, they look superior in design and stylish. Made of stainless steel, these socket-head screws are available in different threads sizes. 

14. Concrete or Masonry Screws

different kinds of screws

Source: thdstatic.com

Concrete or masonry screws are also called combination screws, available in almost all head designs. You can also have flat heads, pan heads, and slotted heads. The design of these screws is unique and has high-low threading, making the screws more durable, solid, and superior. They are mostly used in concrete or stone applications. Most of these screws have corrosion coating to enhance their working life. 

15. Machine Screws

different kinds of screws

Source: cloudfront.net

Practically, all screw types are machine screws that can hold different machine parts. These machine screws are used in almost all electronics, engineering, manufacturing, and others. Here, with the help of a nut, these screws are fastened to a tapped hole. They are used to hold machine parts together tightly. They are made of many materials such as brass, nylon, stainless steel, and carbon steel. 

16. Modified Truss Screws

different kinds of screws

Source: thdstatic.com

Also known as round washer heads, these modified truss screws are used in various industries such as sheet metal and woodworking. Generally, these screws are used for installing ACs, especially the ductwork parts of the ACS. In addition to that, these screws are also used in metal or aluminum framing applications. The main reason why these screws are popular is because of their bigger bearing surface area that fastens the metal frames strongly. Moreover, these screws have low-profile heads that are perfect to fasten any metal to steel or wood. 

17. Thread-Cutting Machine Screws

Types of Screws

Source: grainger.com

When you are using thread-cutting machine screws, you need to ensure that the drilled hole’s length is more than the length of the screw. It will ensure that the material does not get trapped inside the structure or device. These types of screws are used to ensure that no or minimum internal device stresses are produced. When working on any stiff or hard materials, these chart types of screws are highly preferred. 

18. Self-drilling Screws

different kinds of screws

Source: amazon.com

As the name suggests, these are self-drilling screws available in various lengths. You can choose these screws based on your project’s requirements. While selecting these screws, remember that the thickness of the material also impacts the length requirements. Self-drilling screws are used in various applications to fasten sheet metal to metals. 

19. Self-Tapping Screws

different kinds of screws

Source: amazon.com

These screws tap their thread to fasten anything to the structure. While using these screws, you need to ensure that the hole is smaller than the diameter of the screw. Once the drilling is finished in materials such as wood, fix the self-tapping screw in it, and the screw threads will dig into the material. They are used to drill in all materials, such as metals and bricks. Some self-tapping screws have pointy tips that make them easy to cut into the material. 

20. Framing Screws

different kinds of screws

Source: shopify.com

They can be said to be all-rounder screws that can be used for almost all materials such as sheet metal, wood, composite decking, cement fiber boards, laminate, etc. No matter how sturdy the surface or material is, framing screws can be used. They function similarly to circular saw blades. Once fastened, you can seal the hole without damaging the surface. 

Conclusion

This is it. I hope this blog will help you understand different kinds of screws and how they are used in various applications. Before you start any professional or DIY project, you must determine the types of screws used for the project. It will help you to finish the project on time. All types of screws and bolts can be used in different applications, and you need to have a clear understanding of them to use them better.

For more information on home improvement, visit HouseDecorationTip.