InsideThreads How do I Place Very large threads?

[gbradley]

How do I put 7 1/2 " -12 thread on the inside of a 7.409 " hole

ANSI Unified screw threads only go up to 4 inches

 

 

[SLW210]

You'll need to make it. 

 

C:\Users\Public\Documents\Autodesk\Inventor <version>\Design Data\XLS and modify the Threads.xls, you might need to also alter the Clearance.xls, be sure to Save the originals some where, I usually just Saves and add _Original to the name.

 

It's been a while since I used Inventor, but pretty sure it's just the case of adding the new information, make sure they are saved to correct location and are correctly named Threads.xls and Clearance.xls, when you restart Inventor they should be there. 

[gbradley]

On 10/24/2025 at 3:33 AM, SLW210 said:

You'll need to make it. 

 

C:\Users\Public\Documents\Autodesk\Inventor <version>\Design Data\XLS and modify the Threads.xls, you might need to also alter the Clearance.xls, be sure to Save the originals some where, I usually just Saves and add _Original to the name.

 

It's been a while since I used Inventor, but pretty sure it's just the case of adding the new information, make sure they are saved to correct location and are correctly named Threads.xls and Clearance.xls, when you restart Inventor they should be there. 

Worked Great!

 

Thanks for the tip.