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!
  • Students Click Here

*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





How does a coating on a radio fastener affect its ground or which coating  for a fastener makes a good ground?

RE: Fasteners

The coating can affect the ground bond. I always try using unpainted / unanodized fasteners because of that. At the very least take a wire brush to the fastener to remove any non-conductive material.

David Baird
Sr Controls Engineer
EET degree.
Journeyman Electrician.

RE: Fasteners

Powder coat systems can apply a very thin layer, invisible to the eye that can pervent any conduction, only 1 -2 moleculars thick..  If you are use something that has been powder coated , take a hot soldering iron, or small pencil torch and heat the area to remove the thin layer.

Learned this the hard way had units failing UL and CSA testing after changing to powder coat system.


RE: Fasteners

Suggestion: Notice that the power panels use a special ground connection to avoid this problem. Perhaps it may be better to use as special ground connection to make sure that the ground is good.

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


White Paper - Considerations for choosing a 3D printing technology
The adoption of 3D printing into major companies’ product development life cycles is a testament to the technology’s incredible benefits to consumers, designers, engineers and manufacturers. While traditional production methods have limitations in manufacturability, 3D printing provides unparalleled design freedom due to the additive method of building parts layer by layer. Download Now
White Paper - Are all 3D printed metals the same?
With so many different 3D printing metal systems and processes today, how can you know exactly what you’re getting? Today, there are several different methods for manufacturing 3D printed metal components with their own strengths and limits. 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