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!

*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.

Jobs

using a long holokrome setscrew like a stud

using a long holokrome setscrew like a stud

(OP)
I'm thinking of using four M16 X 100 mm setscrews like studs to bolt a component to a big cast frame in place of the wimpy DIN 6912 drilled head low head caps screws used previously. We'll be using class 10 nuts, and torquing them up like a 10.9 bolt. I'm opting for "studs" because we won't have good control over the grip length in all cases, and I fear that will make using bolts kind of risky in regards to bottoming or thread engagement.

According to the relevant ASTM specs ( F912 and A574 ) the chemistries are similar. The setscrews are going to be a bit harder (45-53 RCH) , compared to the SHCS at 38-43 RCH. The ASTM specs talk about elongation of the SHCS material ( minimum 10%) , but only seem concerned about damaging the teeny internal hex of the set screw.

I'm expecting a call back from HoloKrome tomorrow on this matter.

In the mean time, does anyone see any problems?

thanks

Dan T

RE: using a long holokrome setscrew like a stud

Not a good idea. The increased hardness for the set screw is going to result in low ductility and toughness. Set screws are designed for use in compression and not in tension.

RE: using a long holokrome setscrew like a stud

Agree with the poster above me- I wouldn't use a set screw.

You're not talking an odd size or length.. just buy studs.

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


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