Does anyone know this old metal shaper?
Sorry, i have made a terrible mistake.
The screw are square threaded. The image i have linked was only an
example to let know how i have mesured. (also number of threads is
random, i have measured 10 threads and not 14)
I'll add real photos of screw soon. I apologize.
However i cannot find any standard table of square thread. Are they
not standardized?
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