Drywall nail is a type of nail. The biggest feature in appearance is the shape of the horn head. It is divided into 
double-threaded fine-tooth drywall screws and single-threaded coarse-tooth drywall screws. The biggest difference 
between the two is that the thread of the former is double-threaded. The drywall screw series is one of the most 
important categories in the entire fastener product series. This product is mainly used for the installation of various 
gypsum boards, lightweight partition walls and ceilings. Phosphating drywall screws are the most basic product line, 
and blue and white zinc drywall screws are a supplement. The scope of application and purchase price of the two are 
basically the same. The slight difference is that black phosphating has a certain degree of lubricity, and the attack 
speed (the speed at which the steel plate of a specified thickness is penetrated, which is a quality assessment index)
is slightly better; and the blue and white zinc is slightly better in terms of anti-rust effect, and The natural color of the
product is light and it is not easy to fade after the paint is decorated.
There is almost no difference between blue-white zinc and yellow zinc in anti-rust ability, only due to the difference in 
usage habits or user preference.
The single-thread coarse-tooth drywall screw has a wider thread, and the corresponding attack speed is faster. At the 
same time, since the wood material itself will not be damaged after the wood is tapped, it is more suitable for the 
installation of wooden keel than the double-thread fine-tooth drywall screw.
In foreign countries, the general construction pays much attention to the selection of suitable fastener products. The 
single-thread coarse-tooth drywall screw is an alternative to the double-thread fine-tooth drywall screw and is more 
suitable for use in the connection of wooden keels. In the domestic market, double-line fine-tooth drywall screws have
been used for a long time, and it takes a certain amount of time to change the usage habits.