sundance-communications.com/forum Forums General General Telephone & Systems Information Finish nuts for through-wall threaded rod?

I guess you could call it a weld. They don't strike me as being made of the same material. The threaded stud shows some rust, while the mushroom cap seems more like stainless. I could take some more photos when I go to work tonight. It's definitely not removable, the thread and cap are permanently joined by what looks like a weld.

Chris, you're spot-on. That is exactly what I'm looking for. I just remember the actual head having about a 1" long female threaded hub on the back side to receive the 5/16" threaded rod. That's why we nicknamed them "mushrooms", because this hub looked like the stem of a mushroom with the obvious mushroom head.

I installed hundreds of pay phones back in the 90s. I can't believe that I don't have any of these things left or at least a name/manufacturer for them!

And they make fun of people for hoarding. If I had only kept those invoices or catalogs. Wait! I do still have my full set of Sprint/North Supply catalogs in storage and I purchased them through SNS. The end may be in sight.

Ed -

If we'd kept all the stuff (material, catalogs, reference guides etc.) that we ever had, we'd be featured on that show "hoarders".

Don't second guess yourself.

The Board is here to help you find all those things.

And it works!

Sam

Glad I could help. Ed, if you find a manufacturer and/or part number, be sure to post back here. I'm not likely to be installing any payphones, but those things could be really handy for mounting all kinds of other things through cement and especially crumbly old brick.

Just wondering would a supplier like Fastenal or Granger have a fitting like that?

I checked and unless they are special order they don't show up on their sites.