Hello,

The great thing about creating models in this way is that there are multiple ways to get it done. I find that sometimes it is easier to scribble out an idea and think of commands I'd like to use before I sit down and work in MoI to make an object. If you'd like to see one way I make screw threads Michael posted a link in the Resources page on this site. Here is an M6 nut. It also helpful to have those core cutting profiles so you can make an infinite number of types of nuts and bolts while being able to make it look believable.