Thread joint and Interference problem

[soswow]

How do I properly join two threads. When I have screw and hole with a thread.

The problem I have is that Interference tool tells me I have interference when I use non-modeled thread types:

When I use Modeled thread and I am lucky with grooves align perfectly I don't have a colition:

But If I have bolt turned some angle - now it's broken:

The problem is that I try to fasten something between bolt head and some base with threaded hole. This shows what I mean with "something" hidden to identify main point - bolt has some offset from start of hole's thread:

Now it's almost impossible to find this bolt's angle where threads whould align perfectly.

I was assuming interference tool will take into account two threads colliding (non-modeled) ones. But looks like it's not.

What am I missing?

[Phil.E]

I'm not aware of any way to do this, except by luck. It simply depends on too many variables and Fusion does not have a "thread alignment" utility.

Can you elaborate about what kind of problems this is causing for you?

Thanks,

[soswow]

The only minor problem I have is that when I select all the parts to find Interference it will be always showing me all the threads with bolts inside.

[Phil.E · Accepted solution]

Okay point taken.

In my world that's actually a good thing. Interference can show you things you want in your design.

I expect to find interference in threaded holes because I come from 15 years of Inventor where modeled threads are not used. So I would always get a hollow red cylinder where my screws sat in the holes. This is the thread overlap between hole and screw. I knew that because the interference is hollow, I had in fact made a hole for it. If something moved a little I might see a crescent shape instead, and if there was no interference the hole must be too big. So at a glance I could check my holes for all possible fault conditions.

When workfing with sheet metal it was even more important to see the PEM fasteners interfering with the sheet metal in much the same way. These are press fit so interference is built in no matter what and the red shapes provided an instant visual check that I was getting "good" interference.

It's up to your preference, and I get your point, but a few costly mistakes taught me it's better to check both good and bad interference. Perhaps some other users may chime in here and offer their opinions. Also, this is not likely to change any time soon.

One note about the modeled threads, these will make your model very "heavy". They add a lot of surfaces and edges that add very little to your design, aside from looking great in renderings. Again, it's your preference, I just wanted you to know the cost of such things.

Thanks!

[soswow]

Oh. I am new to CAD, so you should be more right than I am ) 

What you just have described makes much sense and I like the idea of true possitives for interference.

I don't like modeled threads ether. I just tried different combination on how this meant to be done since Internet was empty for this question ) I will mark your response as an answer, because I think this is enough for me.