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Question:

Why are the screws of the screw?

Why are the screws of the screw?

Answer:

The threads are divided into connecting threads and drive threads. Which in addition to connecting the thread to remove the common thread but also non-threaded sealed pipe thread, threaded thread with the thread and metric taper thread.
I have not heard the concept of non-standard thread, because the thread is used to assemble, so the lathe in the car thread, the amount of feed and other parameters are given.
Fine thread thread pitch is small, the angle is small, self-locking is better, high strength, because the teeth are not wearable, easy to slip. Fine thread is often used in fine parts, thin-walled pipe fittings or by the impact, vibration and variable load connection, can also be used as fine-tuning mechanism for adjusting the thread.

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