Why are some titanium pan head screw not threaded to the top?

Sometimes, for the same type of titanium pan head screw, we can see that the thread produced by some manufacturers is to the top, while the threaded part produced by some manufacturers is partially blank, not to the top. Why is this?

One is the teeth rub the master in the rolling thread die plate when the rolling thread die plate installed low. That is to say, during the process of thread rolling, when debugging the machine and assembling the rolling thread die plate, the rolling thread die plate was not installed in the standard position, and there was a mistake. So when rubbing the thread there will be a part of the place that is not rubbed to the thread.

Two of them have more chamfered thread plates. There are also requirements for the chamfer of this thread plate, too much is not enough, too little is not enough.

The position of the three rolling thread die plate is installed correctly, but the speed of thread rolling is very fast, the machine may have errors and leaks, and there will be no threads in some parts.

Four are the pushing knife is higher than the rolling thread die plate, this is also in the assembly of the rolling thread die plate when the problem.

Five, the length of the titanium pan head screw was lengthened when the head was started, and the screwdriver adjusted the machine according to the original size, which would also result in some parts not being rolled to threads. But it’s rare.

Of course, these aren’t the only reasons why titanium pan head screw doesn’t screw to the top. There are other reasons.

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