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

Fastener stripping

Fastener stripping

Fastener stripping

I have a screw that attaches a thin piece of sheet metal to a hydroform. Everything with this was fine until I needed to add a 3mm thick Nylon bracket in front of the thin piece of sheet metal.
Now we have Nylon in front of sheet metal in front of hydro form.
The fastener now strips periodically. This did not happen before the nylon bracket was added. I have trialed a longer fastener to make sure there was enough thread engagement and it still strips ?

Any ideas why.

RE: Fastener stripping

One possibility is that the nylon part decreased bearing friction resulting in more tension per unit input torque.  You can determine this by performing some tests - if you do not have torque/tension equipment, ask your fastener supplier to do it for you.  Good luck.

RE: Fastener stripping

Using a friction drilled hole in the hydroform will solve this problem. No fastener needed.  No more stripping.

You can read about the process at this site.


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


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