10 different types of screws and their applications

Screws are essential fasteners in daily life and play a crucial role in various fields. Next, let’s take a look at several common types of screws and their uses.

1.Wood screw

wood screw

Wood screws are screws used for connecting and fixing wood. It usually has small threads for better drilling into wood. It has a variety of materials, such as carbon steel, stainless steel, etc. Wood screws are widely used in furniture manufacturing, wooden structure construction, and other fields, which can firmly connect wood components and ensure structural stability. When using, attention should be paid to selecting the appropriate size and material, pre drilling, and controlling the installation force to avoid damaging the wood. It has the advantages of easy installation and low cost.

2.Machine screw

machine screw

Machine screws are mechanical fasteners that have functions such as connection and load-bearing, and are easy to install, disassemble, and standardize. Common types include hexagonal, cross, and hexagonal screws. When selecting, factors such as material, diameter length, thread type, and strength requirements need to be considered.

3.Self tapping screws

Self tapping screw

Self tapping screws are screws that have the ability to self tap and do not require pre drilling. They are widely used in various fields such as fixing wood and panels in construction and decoration, assembling circuit boards and casings in electronic devices, connecting components in furniture manufacturing, fixing thin metal parts in the automotive industry, installing internal components in household appliances, making fixed frames for billboards, and connecting plastic products to plastic parts. The advantages are time and cost savings, suitability for various materials, and easy installation.

4.Self Drilling Screw

Self Drilling Screw

Self Drilling Screws is a type of screw with a drill tail or drill bit, which can drill holes and form threads on its own, and has the characteristics of high efficiency, firmness, and strong adaptability. It has a wide range of uses and is suitable for connecting metal structures, installing wooden structures, connecting thin plates, installing fences and guardrails, and fixing advertising signs and signs. It can quickly drill and install, providing reliable connections.

5.Set screw 

set screw

Set screw is a specific type of screw primarily used to secure and position components to prevent them from loosening or moving. It achieves a fastening effect by generating friction with the surface of the component. This type of screw usually has a special design, and its head shape can be cylindrical head, conical head, flat end head, etc

Set screws are widely used in mechanical equipment, electronic products, and other devices. They can be used to fix key components such as shafts, gears, bearings, etc. to ensure the normal operation of equipment.


6.Lag screw

lag screw

Lag screws, also known as lag bolts, are large wood screws. Lag screws are used to withstand tensile forces and have high strength, stability and reliability. The head is an external hexagonal wrench actuator for lagging lumber in framing, wood flooring machinery and other heavy-duty applications.


7.Drywall screw

drywall screw

Drywall screws, also known as drywall nails, are a type of self tapping screw mainly used for fixing materials such as gypsum boards and metal keels. Drywall screws are usually treated with black phosphating, which has corrosion resistance and wear resistance, and can improve the service life of the screws. Its head adopts a cross groove or hexagonal design, making it easy to install with a screwdriver or wrench.

8. Plug screw

plug screw

Pipe plug screws (also known as screw plugs) are parts that are threaded to prevent liquid leakage.The head shape can be hexagonal, circular, or other geometric shapes.

As a fastener with self-locking function, screw plugs are widely used in fields such as mechanical equipment, automotive industry, rail transit, aerospace, and precision instruments


9.Deck Screw

Deck Screw

Deck screws are specialized screws designed specifically for outdoor deck engineering. They have a tip, a handle, and a head. The drill head has a groove.

They are usually used to fix pressure treated wood or composite materials to the bottom support structure of the deck, such as joists or beams. The deck screws are made of corrosion-resistant materials, such as stainless steel or coated steel.


10.Double-Ended Screw

Double-Ended Screw

Double headed screws, also known as dowel screws or hanger bolts, have two different threads at both ends. One end is a pointed self tapping thread, and the other end is a flat machine thread.

Pointed self tapping threads are used for self tapping drilling materials such as wood, plastic, or sheet metal, providing a convenient installation method. Flat head machine threads are suitable for connecting with existing threaded holes, providing better connection stability.

It is commonly used in mechanical equipment, hangers, frame structures, and other fields, providing reliable solutions for the fixation and connection of devices.


Understanding the characteristics and uses of various screws will help us better apply them and create a better world.

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