Does anybody know what this stud and corresponding nut is called? I have rack rails with what I believe are 10-32 threads. You can find Phillips head screws that fit these audio rack rails all day long. I’m looking for this combination of stud that has two threaded sizes. One goes into the rack rail, the 10-32 threads I believe, the other is slightly larger and that knurled thumb nut that goes over it.
So you mount the stud portion first, put a shelving unit on the studs, then screw the knurled thumb nut over the exposed part of the stud. Much easier and in my opinion, better looking than the standard Phillips head screws
I would call that a thumb nut and a shouldered dual thread stud.
Might be tough finding that exact combo.
There are all kinds of thumb nuts out there so you should be able to find something for it.
Might be easier to try contacting the vendor/manufacturer of your rails?
If you know the brand, you could try shooting them an email or look up the part on their website?
Thanks, so far I’ve come up with a one sized stud/thumbnut but would really like to track down something more like the original. I did quite a bit of searching for both generic and Middle Atlantic (original vendor) parts. I thought it would be a fairly simple ask since lots of rack mounted equipment. There is an interesting solution for IT/computer hardware called RackStuds but is is geared toward the square rack rails.
Here is what I have so far as a 10-32 only solution:
I have had good luck emailing pictures and/or descriptions to the folks at McMaster-Carr. They seem to delight in finding obscure bits in their massive library of parts. https://www.mcmaster.com/
yeah, it looks like they were used quite a bit for awhile by IBM,
This is from the first link in posted (Rack Release looks like the company that makes them):
Great find. Your searching skills are better than mine. I wonder if the M6 is the “over nut” and the part into the rack rail is still 10-32. Before computer server rooms became so prevalent I think most/many of all the audio racks in commercial locations were 10-32…and like I said you can get 10-32 Phillips head screws all day long. The double sided studs in small and short lengths are not so common. My 10-32 set screw solution up top is not ideal. The funny thing is, I have at least 8 of the thumb screws but only one stud. It been ages but I think the studs must have stayed in the rail system I once had. I hardly ever sell/give/throw away audio stuff, but this is the one rare occasion where I gave something away I knew I would “NEVER” use again. So much for never.
Yeah, that’s IF they even have them. If I needed them I would hit up a few buddies I have in CA and ask them to get them for me, or ship them to their house and go get them. But, I am not the one that needs them, just trying to help a fellow Rooner out.
@RPlace I wonder if you could find them at a computer server rack dealer, or at a “used” computer parts place. Ebay maybe? Or buy some 10-32 threaded rod (or whatever end is bigger) and then a “die” to cut the threads you need.
So close (searched for thread adapters on Mcmaster-Carr):
Funny thing is i have a few of these now that I am thinking about it. I am a photographer as a hobby and my tripods came with them. Probably not the right thread for the OP, though.
