types of screw threads and their applications

Screw fasteners are subdivided into a wide variety of threads, so what are the types of screw threads and their applications?

Machine thread: Generally marked with M, indicating that the thread type is a machine thread. Machine thread are a large category of thread types, and there are also classifications in the machine thread. What are the  types of screw threads and their applications? One is a conventional wire tooth, which is generally formed by cold heading, and the tail is not treated, and is naturally formed. One is a wire triangle tooth, this type of thread is for the screw to fit better. One is the chamfering of the wire, which is generally for better guiding, so that the screw can be screwed in better. The chamfer generally has two molding methods: one is cold-formed natural molding, and the mold is used in production to make the tail chamfered. One is turning molding.

Self-tapping threads: Self-tapping threads are generally indicated by A, B, AB, etc. What are these  types of screw threads and their applications? Generally there are self-tapping sharp tails, self-tapping flat tails, self-tapping tails, self-tapping triangle thread and so on. The tapping of the self-tapping tip is generally suitable for steel sheets of 2.5 mm or less. The centering and penetration are good in use, and the joint performance of the multi-layer board is good. The screws for self-tapping flat tails are generally used for the connection of thick steel plates and steel structural profiles. Screw holes can be used to effectively utilize the blind hole depth. It is also suitable for soft and hard plastic parts, non-ferrous metal parts, cast aluminum and steel castings. The self-tapping and cutting tail is generally used to increase the self-tapping performance of the screw. Self-tapping triangle screws are generally used to make the screws fit better and increase the guiding of the screws.

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