The appearance of Drywall Screw is characterized by the trumpet head shape, which can be divided into two types: double-thread fine-tooth drywall screw and single-thread coarse-tooth drywall screw. The difference between the two is that the thread of the former is double thread. It is suitable for the connection between gypsum board and metal keel whose thickness is not more than 0.8mm, and the latter is suitable for the connection between gypsum board and wooden keel.

Selection criteria for drywall screws:
1. The head should be round (this is also the common standard for all round head screws). The drywall screw heading die manufacturer tells you that due to production process problems, the heads of drywall screws produced by many manufacturers may not be very round, and some are even slightly square. of. The problem is that it cannot completely match the gypsum board after being screwed in. The concentric circle rotates around a central point. This should be well understood.
2. The tip should be pointed, especially when you are using it on a light steel keel. The sharp corners of the drywall nails are generally required to be between 22 and 26 degrees, and the sharp corners of the head are required to be full without dragging or cracking. The drywall screw heading die manufacturer tells you that this "tip" is important for drywall screws, because the use of drywall screws does not make prefabricated holes, and they are directly screwed in, so the pointed head also undertakes the function of drilling through. Especially when it is used on light steel keel, the bad tip will make it impossible to drill in, which will directly affect the use. According to national standards, wallboard nails must be able to penetrate a 6mm iron plate within 1 second.
3. Can't be eccentric. The drywall screw heading die manufacturer tells you that the simple way to judge whether the drywall screw is eccentric is to put the round head down on the table to see if the threaded part is vertical and in the middle of the head. If the screw is eccentric, the problem is that the electric tool will shake when it is screwed in. The shorter screw is fine, but if the longer screw encounters this situation, it will be a big trouble.
4. The cross groove should be located in the center of the round head, otherwise it is the same as 3.
The above is a brief introduction to drywall screws, drywall screw heading die manufacturers hope to be helpful to everyone.