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

Shank vs Full Thread

Shank vs Full Thread

Shank vs Full Thread

Considering the same diameter , what are the difference in strength and applications of Shank vs Full Thread stud bolts ?

RE: Shank vs Full Thread

Pushing a shear load over threads isn't great for the bore, so we prefer a plain shank.

another day in paradise, or is paradise one day closer ?

RE: Shank vs Full Thread

The shank also sets the stud installed height.

RE: Shank vs Full Thread

The full size shank helps with alignment.
And heaven forbid that something goes wrong and the stud sees a bending force the shank will stand up better.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed

RE: Shank vs Full Thread

Fully threaded is probably "worse" in all applications.
If you are concerned about some flavor of "strength" it strongly suggests deciding based on some rule of thumb may be quite risky.

However, I think the (low) potential loading could EASILY make it a moot point.
If a conventional stud is not available so must be custom made, some really nice "all thread" might be a very good alternative.

In addition, IF there REALLY is a strength/fatigue/?? issue, AND the assembly design cannot be modified to use COTS parts, THEN an engineered reduced shank fastener might be far better.

RE: Shank vs Full Thread

For some applications full threaded are preferred. They are more-or-less required in ASME Sec VIII, Div 1. If you are going to tension a stud by measuring elongation, full thread is the way to go, unless the stud is machined to provide constant area.



The problem with sloppy work is that the supply FAR EXCEEDS the demand

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


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