Fine ThreadProducts
Phosphated dry wall screws are the most basic product line, while blue and white zinc dry wall screws are a supplement, and their scope of application and purchase price are basically the same. Slightly different is that black phosphating has a certain degree of lubricity, and the attack speed (the speed of entering a specified thickness of steel plate, which is a quality assessment indicator) is slightly better; Blue and white zinc have a slightly better rust prevention effect, and the product's natural color is light, making it less likely to fade after coating decoration.
There is almost no difference in rust prevention ability between blue white zinc and yellow zinc, only due to differences in usage habits or user preferences.
Single Line Coarse TeethProducts
The thread of a single thread coarse tooth dry wall screw is wider, and the corresponding attack speed is also faster. At the same time, because it does not damage the structure of the wood material itself after entering the wood, it is more suitable for the installation of wooden keel than double thread fine tooth dry wall screws.
In foreign countries, construction generally places great emphasis on selecting suitable fastener products. Single line coarse tooth dry wall screws are a substitute for double line fine tooth dry wall screws and are more suitable for use in the connection of wooden keels. For a long time in the domestic market, double line fine tooth dry wall screws have been used entirely, and changing usage habits requires a certain amount of time.
Frequently Asked Questions (FAQ)
What is the main difference between phosphated and zinc drywall screws?
Phosphated drywall screws (black) offer better lubricity and a slightly faster attack speed into steel plates. Blue and white zinc drywall screws serve as a supplement, offering slightly better rust prevention and a light natural color that resists fading after coating decoration.
Is there a performance difference between blue-white zinc and yellow zinc screws?
No, there is almost no difference in their rust prevention ability. The choice between blue-white zinc and yellow zinc drywall screws is primarily based on regional usage habits or user preferences.
Why are single line coarse thread screws preferred for wooden installations?
Single line coarse thread drywall screws have wider threads that allow for a faster installation speed. Crucially, they do not damage the structure of the wood material itself, making them highly suitable for wooden keel installations.
Are single line coarse thread screws better than double line fine thread screws?
Yes, for wooden keel connections, single line coarse thread screws serve as a superior substitute because they preserve the wood structure better than double line fine thread screws.
Why is the adoption of coarse thread screws slower in some markets?
In certain domestic markets, double line fine thread drywall screws have historically been used for all applications. Changing established construction habits and preferences to transition to coarse thread screws naturally takes some time.