Roberto_73
Guest
:smile: hello to all.
in the last days in the company was born a discussion regarding the relationship between the length of the threaded part of the mothervite (both that of a hole or similarly the height of a nut) and mechanical resistance of the threads of the mothervite itself. usually the problem is bypassed by checking the screw stem traction: if screws and mothers have similar mechanical resistances do not need to make the test of resistance of the mothervite if its thread (or the height of the nut) is at least 1.5 times the nominal diameter. but if the material in which the threaded hole is present is definitely less resistant than the material of the screw what happens? is it enough to increase the length of the thread to compensate for this difference with a durable section increase? Since some colleague says that it is only the first 3 or 4 threads to work I would like to understand the utility or not to have longer threaded holes or higher dice.
Thank you.
:smile:
in the last days in the company was born a discussion regarding the relationship between the length of the threaded part of the mothervite (both that of a hole or similarly the height of a nut) and mechanical resistance of the threads of the mothervite itself. usually the problem is bypassed by checking the screw stem traction: if screws and mothers have similar mechanical resistances do not need to make the test of resistance of the mothervite if its thread (or the height of the nut) is at least 1.5 times the nominal diameter. but if the material in which the threaded hole is present is definitely less resistant than the material of the screw what happens? is it enough to increase the length of the thread to compensate for this difference with a durable section increase? Since some colleague says that it is only the first 3 or 4 threads to work I would like to understand the utility or not to have longer threaded holes or higher dice.
Thank you.
:smile: