Drywall Screw

Product Introduction
The most prominent feature in appearance of the drywall screws is the shape of trumpet head. It is divided into double-line fine-thread drywall screw and single-line coarse-thread drywall screw. The biggest difference between them is that the former, which is suitable for the connection between gypsum board and metal keel with a thickness of no more than 0.8mm, while the latter is suitable for the connection between gypsum board and wooden keel.
Drywall screw is one of the most important categories in the whole fastener product line. This product is mainly used for the installation of various lightweight partition walls and ceilings.

Double fine thread
Phosphated drywall screws are the most basic product line, while blue and white zinc drywall screws are a supplement. The application and purchase price of the two are basically the same. Black phosphated ones have certain lubricity, and the tapping speed (the speed of entering the specified thickness steel plate, which is a quality evaluation index) is slightly faster; Blue-white zinc is slightly superior in anti-rust effect, and the color of the product is shallow, so it is not easy to be colored after coating.
There is almost no difference between blue zinc and yellow zinc in anti-rust ability, only the difference in usage habits or the preference of users.

Single coarse thread
Single coarse thread drywall screws have wider pitch and faster tapping speed. At the same time, they are more suitable for installation than double find thread drywall screws because they won't destroy their own structure after tapping into wood.
In international markets, the selection of suitable products has been an important consideration. Single coarse thread drywall screws are more suitable for the connection of wooden keel as an alternative to double find thread drywall screws. In the domestic market, double fine thread drywall screws have been used for a long time, and it takes some time to change the usage habits.

Self-drilling drywall screws
It is used for the connection between gypsum board and metal keel with thickness not exceeding 2.3mm and there are black phosphate and yellow zinc finish available. The application and purchase price of the two are basically the same. Yellow zinc are slightly superior in anti-rust effect, and the color of the product is shallow, so it is not easy to be colored.