15-05-22, 05:27 PM
A/the thread is cut into the outside circumference a/the shaft. If the thread has been worn away so has the shaft, to recut a/the thread the shaft must be machined parallel, it will now be smaller i.e. the thickness of what was the thread. The shaft now being smaller in circumference, by definition so will the thread size by a few mm eg was 14, now 12 or whatever depending on what thread is being cut.
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