High-Strength Coarse-Thread Drywall Screws from China Suppliers | Reliable Factory Supply
Short Description:
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Discover high-quality products from trusted China Suppliers! EXW Price: $720 - $910 per TON Minimum Order Quantity: 2 tons Packaging: Secure bags or boxes with pallets at the port Shipping Ports: Tianjin, Qingdao, Shanghai, Ningbo Delivery Time: 5 to 30 days depending on quantity Payment Options: T/T, LC Factory Supply Capacity: 500 tons per month
Grades4.8, 8.8, 10.9, 12.9, A2-70, A4-70, A4-80, etc.
The following is an introduction to high - strength coarse - thread drywall screws:
Features
High Strength
Made of high-quality carbon steel materials and through heat treatment processes, the surface hardness can reach HV560-750, and the core hardness is between HV240-450. It can withstand large pulling and torsional forces, and is not easy to deform or break.
Coarse-Thread Design
The thread pitch is larger than that of ordinary drywall screws. When screwed in, it can penetrate deeper into the material, forming a stronger connection, providing greater friction and fastening force, making the fixing effect more reliable. Moreover, the driving-in speed is fast, saving construction time.
Self-Tapping Performance
The head is in a sharp flared shape. There is no need to pre-drill holes, and it can be directly driven into materials such as wood, gypsum board, and thin metal sheets, and complete the tapping and fastening process by itself, improving construction efficiency.
Surface Treatments
Common surface treatments include black phosphating and galvanizing. The black phosphating treatment forms a black phosphating film on the surface of the drywall screw, which has good rust-prevention and corrosion-resistance capabilities and also has a certain lubricity, facilitating screwing in. The galvanizing treatment can form a zinc layer on the surface of the drywall screw, effectively preventing rust and extending the service life.
Specification Sizes
Diameter: There are various specifications, and common ones are 3.5mm, 4.2mm, 4.8mm, 5.5mm, etc.
Length: Generally between 16mm and 70mm, such as 16mm, 25mm, 35mm, 55mm, 70mm, etc., which can be selected according to different application scenarios and material thicknesses.
Application Fields
Building Decoration: Mainly used for connecting gypsum boards to wooden or light-steel keels, and also for the installation of light-weight partition walls and ceiling suspensions. It can also be used in the construction of wooden-structure houses, such as the fixation of wall panels and roof panels.
Furniture Manufacturing: In furniture manufacturing, it is used for the connection and fixation of plates. For example, in the assembly of wardrobes, cabinets, bookshelves, etc., it can make the connection of plates more firm and ensure the structural stability of furniture.
Other Fields: It can also be applied to the connection and fixation of thin metal sheets and composite materials, such as the fixation of thin plates in simple buildings, the installation of vehicle interior panels, and the assembly of electrical equipment cabinets.
Frequently Asked Questions (FAQ)
Q1: What are the main features of high-strength coarse-thread drywall screws?
A1: These screws feature high strength with a surface hardness of HV560-750, a coarse-thread design for deeper material penetration and stronger connections, self-tapping performance that eliminates the need for pre-drilling, and protective surface treatments like black phosphating and galvanizing.
Q2: What materials and grades are available for these drywall screws?
A2: They are manufactured using high-quality materials including carbon steel, alloy steel, stainless steel, brass, and copper. They are available in various grades such as 4.8, 8.8, 10.9, 12.9, A2-70, A4-70, and A4-80.
Q3: How does the coarse-thread design benefit installation?
A3: The larger thread pitch compared to ordinary drywall screws allows the screw to penetrate deeper into the material. This creates greater friction and fastening force, ensuring a more reliable connection while significantly speeding up the driving process to save construction time.
Q4: What surface treatments do you offer for rust prevention?
A4: We offer several surface treatments including plain, galvanized (ZP), high-definition, hot-dip galvanized, and Dacromet. Specifically, black phosphating provides excellent corrosion resistance and lubricity for easy installation, while galvanizing forms a protective zinc layer to extend service life.
Q5: What are the common sizes and diameters of these screws?
A5: Common diameters include 3.5mm, 4.2mm, 4.8mm, and 5.5mm. Standard lengths range from 16mm to 70mm (such as 16mm, 25mm, 35mm, 55mm, and 70mm), allowing you to choose the perfect size based on your material thickness.
Q6: In which industries and fields are these screws most commonly used?
A6: They are widely used in building decoration (connecting gypsum boards to keels and ceiling installations), furniture manufacturing (assembling cabinets, wardrobes, and bookshelves), and other fields like securing thin metal sheets, composite materials, and electrical cabinet assembly.
