×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

thread too tight

thread too tight

thread too tight

(OP)
hi everyone,

I know very little about machining and I want to learn more. I asked a machine shop to make a part. It has a thread to connect with another part. Of course another part has thread too. My idea is I can use my hand to have enough force to turn the part into another part. But the thread is too tight to turn by hand, I want to know how does the machine shop will do to make the thread lose a bit so that it can turn in by hand completely. I want to know what will the machine shop do on the part to make the thread more smoother? thanks

RE: thread too tight

If the thread was put on the part with a lathe the threads can be "picked up" again and a few thousandths can be removed. If the two mating parts can screw together the threads might just need to be polished or cleaned up, it might have a burr.
 If the part was threaded with a die most die's are adjustable.

RE: thread too tight

Aside from the above advice there is one thing that is quite common with tight threads is there is root tip interference. This can be helped by taking a light file cut on the tips of the male thread or on future parts by an oversize tap.
If the interference is on the female thread tips it is harder to take down the tips. Interference from Internal thread tips can be corrected on future parts by using a slightly larger drill bit.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close