High-Strength Coarse-Thread Drywall Screws - China Suppliers & Factory, Exw Price 720-910 USD/Ton
The following is an introduction to high - strength coarse - thread drywall screws:
Key Features
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.
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.
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.
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
There are various specifications, and common ones are 3.5mm, 4.2mm, 4.8mm, 5.5mm, etc.
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
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.
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.
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
They are manufactured using high-quality carbon steel materials and undergo rigorous heat treatment processes. This gives them a surface hardness of HV560 - 750 and a core hardness of HV240 - 450, allowing them to withstand large pulling and torsional forces without breaking.
The coarse-thread design features a larger thread pitch than ordinary screws. This design allows the screw to penetrate deeper into the substrate materials, creating a tighter hold with increased friction and fastening force, while also speeding up the installation process.
No, pre-drilling is not required. Thanks to their self-tapping performance and sharp flared head design, they can be driven directly into materials like wood, gypsum board, and thin metal sheets.
Common treatments include black phosphating and galvanizing. Black phosphating adds a protective film that prevents rust and adds lubricity for easier driving. Galvanizing forms a zinc layer that effectively blocks moisture to prevent rust and extend the screw's overall service life.
Common diameters include 3.5mm, 4.2mm, 4.8mm, and 5.5mm. Standard lengths generally range from 16mm to 70mm, allowing you to choose the ideal size based on material thickness and application needs.
These screws are available in Carbon steel, alloy steel, stainless steel, brass, and copper. They comply with ISO9001, ISO14001, ISO45001, and SGS certifications, and meet standards including GB, UNC, BSW, and JIS.