Common Screw Types and Their Applications

Screws are one of the most widely used fasteners in woodworking, furniture, construction, and machinery. Each screw type has unique features and applications. Choosing the right screw ensures secure connections and long-lasting performance.

Self-Tapping Screw

A self-tapping screw has sharp threads and a pointed end, allowing the screw to cut into materials like metal sheets, wood, or plastic without pre-tapping.

Applications: A self-tapping screw is widely used in sheet metal assembly, home appliances, and plastic components.
Advantages: Self-tapping screws enable quick installation, strong fastening, and eliminate the need for tapping.

Wood Screw

A wood screw features coarse threads with a large pitch, providing excellent holding power in wood materials.

Applications: Wood screws are commonly used in wooden furniture, flooring, and carpentry projects.
Advantages: A wood screw grips deeply into wood fibers and effectively prevents loosening.

Machine Screw

A machine screw has standard machine threads and requires a tapped hole or nut for fastening.

Applications: Machine screws are ideal for machinery, electronic devices, and automotive parts.
Advantages: Machine screws provide precise fits and are perfect for metal-to-metal fastening.

Self-Drilling Screw

A self-drilling screw features a drill-shaped tip that enables it to drill, tap, and fasten in a single step.

Applications: Self-drilling screws are widely used in steel structures, roofing systems, and construction projects.
Advantages: Self-drilling screws reduce installation time and improve fastening efficiency.

Hex Head Screw

A hex head screw has an external hexagonal head that can be tightened with a wrench, providing strong load-bearing capacity.
Applications: Hex head screws are widely used in machinery, construction, and steel frameworks.
Advantages: A hex head screw offers high strength, reliable fastening, and easy torque application.

Flat Head Screw

A flat-head screw has a countersunk head, allowing the screw to sit flush with the surface after installation.
Applications: Flat head screws are used in furniture, doors, and electronic enclosures.
Advantages: A flat head screw ensures a smooth surface and neat appearance.

Round Head Screw

A round head screw has a dome-shaped head that remains visible after fastening.
Applications: Round head screws are often used in furniture, lightweight fixtures, and decorative assemblies.
Advantages: A round head screw is easy to install and provides an aesthetic effect.

Socket Head Cap Screw

A socket head cap screw (also known as an Allen screw) has a recessed hexagonal socket, tightened with an Allen wrench.
Applications: Socket head cap screws are commonly used in precision instruments, bicycles, machinery, and furniture.
Advantages: A socket head cap screw provides compact design, high strength, and is suitable for limited spaces.

Special Screw Types

In addition to the above, there are also special screw types:

Security screws: anti-tamper screws designed for public facilities.

Wing screws: screws with wing-shaped heads for hand tightening.

Adjustment screws: screws used for fine-tuning in precision equipment.

Why Choose Xinchi Fasteners for Screws

When sourcing screws for furniture, machinery, or construction projects, quality and supply reliability matter most. Xinchi Fasteners Co., Ltd. provides professional screw solutions:

• Strong production capacity: 102 cold heading machines, with daily output over 10 million screws.
• Complete product range: wood screws, self-tapping screws, hex head screws, machine screws, flat head screws, round head screws, and custom fasteners.
• Strict quality control: Each screw is tested for thread precision, hardness, and corrosion resistance.
• Customization support: Non-standard screws, surface treatments (zinc plating, black oxide, stainless steel), and special packaging.
• Global export experience: Xinchi screws are trusted by clients across Europe, North America, and Southeast Asia.

By choosing Xinchi Fasteners, you get reliable screw products, competitive prices, and professional service for all your fastening needs.

XINCHI is a trustworthy fastener company, especially in furniture nuts. We have a factory,  founded in 2007. We are the designated fastener supplier to“STAPLE”. As a trusted fastener supplier, XINCHI offers a wide range of high-quality fasteners, including nuts, screws, bolts, rivets, and washers. If you would like to learn more about fasteners or are interested in wholesale fasteners, please do not hesitate to contact us. Our experienced and expert service team will reply as soon as possible.