help for thread drawing

[VinDiesel]

hi guys, as it has long been citing me more with threads I wanted help to realize different threads from m3 to m8, I know that you use the spiral command, but I don't know how to draw the right shape (triangle) to make it extrude along the spiral, in addition I don't know what value to give to the spiral for the correct step.

I hope you can help me thank you very much:

 

[VinDiesel]

Can't anyone help me?

 

[Primizio]

iso 261
iso 262
page g-51 balds about depends on the edition.
any technical drawing book.

Bye.

 

[VinDiesel]

I have seen but I have not understood much, cmq I use the chain so I do before, thanks the same

 

[VinDiesel]

I can't draw it, I need both lives and mumps so that when the mold can be screwed

 

[prismacad]

I have made a video about it, although in this version there is no talk, but only music, you should understand the same, I hope.https://youtu.be/eanxw1oxbt0