Sanwei:Your Professional Threaded Screw Manufacturer!
Hebei Sanwei Fasteners Co., Ltd. is a high-tech enterprise specializing in the research, development, production, and sale of fasteners, located in Hebei Province, China. Since its establishment,wei has been committed to providing customers with high-quality, high-performance fastener solutions, which are widely used in various fields such as construction, machinery manufacturing, automobile, and power communication.
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![Hexagon Head Screws]()
Hexagon Head ScrewsStandard: DIN933. Name: Hexagon head screws. Material: carbon steel and alloy steel, etc.. Grade: Grade 4.8, Grade 5.8, Grade 8.8 -
![Thread Cutting Screws]()
Thread Cutting ScrewsStandard: DIN7500. Name: Thread Cutting Screws. Material: Carbon steel, alloy steel, etc.. Grade: Grade 4.8, Grade 5.8, Grade 8.8 -
![Round Head Screw]()
Round Head ScrewStandard: DIN7380. Name: Round head screws. Material: carbon steel and alloy steel, etc.. Grade: Grade 4.8, 5.8, 8.8 -
![Double Threaded Screw]()
Double Threaded ScrewStandard: DIN18182. Name: Double Threaded Screws. Material: carbon steel and alloy steel, etc.. Grade: Grade 4.8, 5.8, 8.8 -
![Stainless Steel Threaded Rods]()
Stainless Steel Threaded RodsStandard: DIN976. Name: Stainless Steel Screw. Material: 304, 316 stainless steel. Grade: A2-70, A4-70
Why Choose Us
OEM/ODM Service
Our customised fasteners are made to your special requirements. It can be fully threaded or partially threaded, and the thread, driving method, material, length, head shape, plating and all these can be specially designed according to your needs.
Good CNC machining technology
From material selection to finished products, Handan Sanwei provides you with comprehensive solutions when it comes to customised fasteners. The fasteners we make are high precision and strong. No matter what kind of precision you need, we can meet it and guarantee your satisfaction.
Strong engineering design team
Our company has an excellent and professional engineering team, and a number of technicians are elites in the industry. The staff always strives to explore new methods and technologies. From the selection of metals and special alloy materials to the finished fasteners, we can solve all aspects of the whole project engineering.
Professional Testing Laboratory
Quality assurance and testing is an important part of producing fasteners. Handan Sanwei has a specialised quality testing laboratory with spectrometers, hardness testers, tensile testers, salt spray test chambers and other equipment, where raw materials and final products are strictly tested. In addition, the company also has experienced testing experts who use professional methods to comprehensively test the fasteners and finally give you a detailed test report.
Digital Quality Control System
We rely on our self-developed full-process digital quality inspection system to strictly control every step from raw materials entering the factory to finished products being shipped. This system will always monitor the quality of the products to ensure that each batch of products meets the industry standards and complies with customer requirements. In addition, it collects and feeds back data in real time, giving you a clear understanding of product quality.
Advantages of Threaded Screw
Strong and Secure Connections:
Clamping Force:
Threaded screws provide a strong clamping force, making them suitable for applications requiring a reliable connection.
Load Distribution:
The threads distribute load evenly, reducing stress on the connected parts and enhancing overall system strength.
Resistance to Loosening:
Threaded connections, especially with thread-forming screws, offer a self-locking effect, reducing the risk of loosening due to vibration or other factors.
Precision and Adjustability:
Precise Adjustments:
Threaded screws allow for precise adjustments, which is crucial in applications where fine-tuning is needed.
Adjustability:
You can easily adjust the tightness of threaded fasteners, making them suitable for situations where alignment is critical.
Versatility and Ease of Use:
Ease of Assembly/Disassembly:
Threaded fasteners are easy to screw or unscrew, simplifying assembly and disassembly processes.
Material Compatibility:
Threaded screws can be used with a wide range of materials, including wood, plastic, and metal.
Sealing Capabilities:
Threaded screws can facilitate sealing when necessary, creating airtight or watertight connections.
Specification
|
Standard |
DIN |
|
Name |
Threaded Screw |
|
Material |
Carbon steel, alloy steel, etc. |
|
Grade |
Grade 4.8, Grade 5.8, Grade 8.8 |
|
Nominal Diameter |
M2-M48 |
|
Pitch |
0.4-5 |
|
Surface treatment |
ZP,YZ,BLACK |
Application of Threaded Screw
DIY and Home Improvement Projects
Threaded screws are essential for DIY and home improvement projects, providing secure fastening that ensures the stability and durability of constructed items.
Woodworking
In woodworking, screws create strong joints between wooden pieces and are commonly used in furniture making, cabinetry, and decorative woodwork.
Drywall Installation
For drywall installation, specialized drywall screws are used to attach drywall sheets to wood or metal studs. These screws have bugle-shaped heads to prevent tearing and coarse threads for quick insertion.
Metalworking
In metalworking, self-tapping screws are preferred as they can create their own threads in the material, eliminating the need for pre-drilling. They are used for constructing metal frames, joining sheet metal, and assembling household appliances.
Industrial and Engineering Applications
In industrial and engineering contexts, threaded screws are vital for assembling and maintaining machinery, equipment, and structures.
Machinery Assembly
Machine screws are used extensively in the assembly of machinery and equipment. These screws fit into pre-tapped holes or are used with nuts, providing precise and secure fastening.
Structural Applications
Lag screws, also known as lag bolts, are heavy-duty fasteners used in wood construction for connecting large wooden pieces. Lag screws offer significant holding power, making them ideal for building decks, wooden bridges, and other structural applications.
Automotive and Aerospace
In the automotive and aerospace industries, specialized screws and bolts are used for their strength and resistance to vibration. These fasteners ensure the safety and reliability of vehicles and aircraft.
Types of Threaded Screw
Fully threaded screws have threads running the entire length of the shaft, providing maximum holding power and grip. They are commonly used in applications requiring strong and secure fastening, such as joining metal parts or securing objects in place.
Partially threaded screws have threads on part of the shaft and a smooth section, which helps with alignment and reduces friction during insertion. These screws are often used in woodworking and construction, where precise alignment and holding power are essential.
Coarse threads have larger gaps between threads, making them easier to assemble and less likely to cross-thread. Fine threads have smaller gaps, providing a tighter fit and greater holding strength. Coarse threads are ideal for frequent adjustments and work well in softer materials, while fine threads are better for precision applications and harder materials.
Drywall Screws
Drywall screws are designed to fasten drywall sheets to wood or metal studs. They have a bugle-shaped head to prevent tearing and coarse threads for quick installation.
Woodworking Screws
Woodworking screws have a smooth shank and sharp threads to easily cut into wood. They are made of softer metals to avoid splitting the wood.
Self-Tapping Screws
Self-tapping screws create their own threads as they are driven in, eliminating the need for pre-drilling. They are widely used in metalworking, plastics, and composites.
Machine Screws
Machine screws are used with nuts or tapped holes for precise and secure fastening in machinery and equipment.
Lag Screws
Lag screws, also known as lag bolts, are heavy-duty fasteners for wood construction, with a hex head and coarse threads for strong holding power.
Single-start threads have one continuous helical thread, advancing by one pitch per rotation. Double-start threads have two parallel threads, advancing by two pitches per rotation, allowing faster movement. Multi-start threads have more than two parallel threads, advancing quickly per rotation, useful in machinery.
Right-hand threads tighten clockwise and loosen counterclockwise, used in most applications. Left-hand threads tighten counterclockwise, used where normal rotation might loosen right-hand threads, such as in rotating machinery.
Packaging and Shipping
FAQ
We're professional threaded screw manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to wholesale customized threaded screw made in China here from our factory. Contact us for quotation.
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