Best way to align threads quickly?

[24ProwseJa]

Does anybody know if there is any way to quickly and precisely align bolt and screw threads in an assembly? For example, I have modeled an engine(for an RC plane); the carburetor uses a pin in a thimble that is screwed into a threaded spraybar. How can. How can I align the hole with its corresponding threads without having to go back and forth with the move tool?

I don't really want to create a thread and use the combine tool to cut the threads on the hole because it's harder to change the threads in the future.

[wersy]

Don't use move tool.
For assemblies use joints.

[jhackney1972]

With Slider Joint and a Section View you can line them up pretty quickly.  Then you can either Lock the Joint or create a same value Motion Link.

[HughesTooling]

Just doing a quick test and if both parts start from the same plane the threads will align.

Also if the start plane on one object is offset by the pitch they also stay aligned even in the extrusion length is different on each part.

In the part below the top face of the thread is 1.5mm above the top of the nut, the same as the pitch. Knowing this should make it quite easy to set up using components and a joint.

[24ProwseJa]

When testing this, I used a joint to connect a bolt to the face that the hole was on(with no gap), and I had to offset the bolts half of the pitch upwards for the threads to line up. Are you sure 1.5mm was the correct offset on your part? For context, the thread was an M50x4 class 6G

(edit)

I read that wrong, but how much do you have to rotate any specific thread for them to line up? Is there a formula for how much you have to rotate based on the thread's major diameter and its pitch?

[HughesTooling]

@24ProwseJa Are you modeling both parts?

If you are modeling the bolt, try this.

Create the component for the bolt or roll the timeline back to the start of an existing component. Make the origin visible then add a joint using the bolt's origin and the top of the hole in the part with the thread (Note Z facing out). You'll want to use cosmetic threads at this point. Just noticed the alignment angle was automatically set to 180°and this works?

Now create the cylinder for the bolt thread using the XY plane of the bolt component and add the thread. See attached file.

[HughesTooling]

Just noticed, if you want to leave a gap for a washer you can use offset face after the thread is created and the thread stays alinged.

At this point with a 2.5mm offset it looks a mess,

but after accepting all's good. See attached file.