undisplayed thread lines

[gianlucax90]

hi guys!if my memory does not deceive me ,I remember that in the table of the views iso (3d) of parts or assemblies with threading processes (holes, screws) you could graphically recognize the thread.instead now I find that in the case of holes, I have smooth holes, and in the case of screws, of the smooth screws.I have already tried to double click on the islet view
I hope I've been clear.
Thank you in advance

 

[MBT]

but in the model is the thread?

 

[gianlucax90]

Of course there is thread in the part....