×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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

Jobs

Weld Nut Load Ratings?

Weld Nut Load Ratings?

Weld Nut Load Ratings?

(OP)
Hello All,

I have been searching for load ratings for various weld nut sizes. I feel like this information should be out there based on the nut size and the weld size, but I have so far been unsuccessful. If anyone has seen information like this, could you point me in the right direction? Ultimately I would like to determine an upper limit for tensile loads that can be applied to weld nuts before the weld is put at risk.

Thank you!

RE: Weld Nut Load Ratings?

Weld nuts should be loaded so that the weld is under compression. The welds are simply to provide a 'self wrenching' feature and allow positioning and locating in blind or inaccessible locations.
Based on the variability of welds and fusion on weld nuts, I would not trust them in a tensile loaded condition.

RE: Weld Nut Load Ratings?

There are various forms of weld nuts. The most common are attached using a resistance weld. These weld nuts are typically made from steels that allow them to readily weld to common structural steels, so the nut threads usually have modest strength. The welds usually are only required to provide enough strength to hold the nut in place while the mating bolt is being tightened. Most weld nuts are only designed to carry tension loads once the bolt is installed and properly preloaded. The primary stress experienced on the weld joint of the weld nut is probably shear when the mating bolt is torqued.

RE: Weld Nut Load Ratings?

". . .upper limit for tensile loads that can be applied to weld nuts before the weld is put at risk."

Unless you pull-test a LARGE sample, that allowable load approaches *zero*. If you want to try testing, I would suggest the sampeling rate amd methodology used in AWS D1.1 code for testing threaded anchor studs. Problem with that is that unless you find a *very* low failure rate, it would have been faster to have manually welded these nuts.

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!


Resources