14 nut. What is a screw?

The nut of 14 is matched with the screw of 14, and the matching specifications of the nut and the screw are the same.

Excessive thread transforms the spiral motion of nut into linear motion along the axis of bolt. The coupling can be fastened and disassembled by tightening and loosening screws.

It is difficult to see the difference between English screws and American screws by visual inspection. The difference between English screws and American screws is that the angle of rubbing teeth of English screws is 55 degrees, while that of American screws is 60 degrees.

These two standard screws can be used in most cases, but the screw with 1/2 specification can't, because the standard thread of British system is 1/2- 12, while that of American system is 1/2- 13.

Extended data:

The code of the tolerance zone is represented by numbers and letters (capital letters for internal threads and lowercase letters for external threads), such as 7H and 6g. In particular, 7H and 6g represent thread tolerance, and H7 and g6 represent cylindrical tolerance codes.

Before electroplating the screws after production, we will check the dimensions and tolerances of the screws. See if it meets the national standards or customer requirements.

After welding is completed, put the ring wrench on the nut and twist it back and forth from left to right, or tap the nut end face with a small hammer while twisting it back and forth, so as to take out the broken bolt. After taking out the broken bolt, process the thread in the frame with a suitable tap to remove rust and other impurities from the hole.

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