M2 M2.5 stainless steel thin head cross drive blue patch precision screw

Industry knowledge：

The most commonly used screw thread is divided into mechanical thread, also known as machine thread, self tapping thread, wood thread, plate thread, which is divided from the screw thread type; There are also applicable standards from different countries. M3 or M5 thread are metric, generally you need to ask what type of thread is, such as machine thread, or self tapping thread and so on. If it is a mechanical thread, the pitch is generally the standard pitch, that is, coarse thread. The coarse thread of metric screw is the standard pitch. For example, the standard pitch of M3 mechanical thread is 0.5mm. The metric pitch refers to the distance between the top of two adjacent threads. The common standard threads include standard coarse thread and standard fine thread.