From my D&M engineering manual / start a plane on the top of the object you want to have threads on if its a bolt then a plane on the end of the bolt.Select the circular edge andconvert it so you have that round profile on your new sketch, then click insert from the main menu click helix spiral from there you pick you direction the amount of revolutions you need that will be your path you then do a seperate sketch ofwhat you want your thread shape to be. Put your thread profile at 90* from the thread plane and add a pierce realtion to your helix spiral. then you use the swept boss bass feature/ your profile is the small shape that you need for your threads thepath is the helix you had created earlier. I recomend the D&M engineering manual with the 9 volt flash light to anyone who is learning SOlidworks.
