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


Im looking for the strongest concrete screws?

Im looking for the strongest concrete screws?

Im looking for the strongest concrete screws?

for outdoor humid, hot central florida. Strong structural concrete screws.

Im attaching simposon H10S and LGT2 straps to my rafters and cinder block walls. Im using simpson screws to attach to the rafters, however simpson makes no outdoor concrete screws and has no suggestions. So, Im looking for the best reasonably priced outdoor concrete screws for use in central florida.


RE: Im looking for the strongest concrete screws?

Call a salesman from one of the many anchor manufacturers. They usually have a good technical background. Tell them your intended purpose, the base material, if they are exposed to moisture, etc. and have them recommend a product. You say concrete and cinder block. You need to clarify if you are screwing into concrete or CMU. Here are some manufacturers to contact: Hilti, Simpson, Redhead, and Powers. You will likely need a stainless steel anchor and it may be wedge or expansion instead of screw. Being in Florida, there is no seismic, so you won't need an anchor designed for cracked concrete. However, you will need an anchor with a Flordia Product approval. The salesman should know this also.

Juston Fluckey, SE, PE, AWS CWI
Engineering Consultant

RE: Im looking for the strongest concrete screws?

Add ELCO to the list of manufactures to contact. They make concrete/masonry screws with 300 series stainless steel and a hardened steel tip. The problem may be that many (most) Simpson connectors are designed for nails and the screw spacing and edge distance could be too close for masonry or concrete screws to work effectively. (By the way, this post is in the wrong place, it has little or nothing to do with BIM)

RE: Im looking for the strongest concrete screws?

And I just realized it is super old!

Juston Fluckey, SE, PE, AWS CWI
Engineering Consultant

RE: Im looking for the strongest concrete screws?

Simpson Titen HD screws are good.

Mike McCann, PE, SE (WA)

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 - A Guide to 3D Printing Materials
When it comes to using an FDM 3D printer effectively and efficiently, choosing the right material at the right time is essential. This 3D Printing Materials Guide will help give you and your team a basic understanding of some FDM 3D printing polymers and composites, their strengths and weaknesses, and when to use them. 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