Best guess is it is some sort of male/female stud I guess but am afraid to google that.
I need something like what is pictured below the only difference is instead of the long portion being externally threaded to accept a nut it is a sleeve that is internally threaded to accept a bolt.

Can't say I have ever seen such a fastener. What will it be used for?

First thing that came to mind was a shock extender (for automotive shocks that are too short):



Is that kinda what you're looking for?

- Brian

Those look a lot like the exhaust manifold bolts for my truck (Titan).
Don't know what they are called or where to get though.
Good Luck.

quote:

Originally posted by orionS14:
First thing that came to mind was a shock extender (for automotive shocks that are too short):



Is that kinda what you're looking for?

- Brian

I've seen something like this on kits used to tighten up a fence gate. You attach a bar to the top right corner and bottom left corner and that device pictured spins in the middle of the two bars to tighten or loosen (and thus bring the gate back into square - stop the sagging of the outer corner...)

Also, just thought: you could buy something close to what you need and then drill and tap the part that you want as a sleeve...

You might check here.

https://www.mcmaster.com/bolt-extenders/

quote:

Originally posted by bob ramberg:
Can't say I have ever seen such a fastener. What will it be used for?

Will be used for mounting a support plate under my dash and connecting a mount system to the top of the dash. The current install hardware requires the entire stereo, and HVAC controls to be disassembled for install. If I want to adjust my mounts on the top of the dash I have to take it all apart.
If I attach the plate underneath using what I am looking for I can remove the mount on top of the dash and the plate under the dash will just stay put giving me no reason to remove the dash after the initial install.
And I am sure that makes almost no sense.

quote:

Originally posted by orionS14:
First thing that came to mind was a shock extender (for automotive shocks that are too short):




Is that kinda what you're looking for?

- Brian

Essentially what I am looking for.

quote:

Originally posted by smschulz:
Those look a lot like the exhaust manifold bolts for my truck (Titan).
Don't know what they are called or where to get though.
Good Luck.

What I pictured are exhaust manifold studs and the closest thing I could come up with that I actually knew the name of.

www.copperstate.com

will know,

quote:

Originally posted by Jelly:
You might check here.

https://www.mcmaster.com/bolt-extenders/

Also
https://www.mcmaster.com/stand...readed-hex-standoffs

No expert but those studs are called double ended studs.

https://www.mscdirect.com/indu...ds-double-ended.html

.

quote:

Best guess is it is some sort of male/female stud

Here's what you'd get.... LOL


Male Female Standoff Studs are an apt description..

Link

quote:

Originally posted by springnr:
Also
https://www.mcmaster.com/stand...readed-hex-standoffs

Given the application, hex standoffs are probably the best bet. That's exactly what they're for.

They're the standard for mounting small things like circuit boards that need to be mounted securely on, but not touching, something. You stick the threaded ends through whatever you're mounting the board to and secure them with nuts, then you have a bunch of elevated threaded holes to screw the circuit board to.

In a car, I'd make sure to use some blue Loctite on both fastener ends. The vibration in a car sometimes shakes loose even properly torqued fasteners.

Check Fastenal’s catalog.

Search for "All Thread Anchor Lags".
https://www.google.com/search?...rome-mobile&ie=UTF-8

Sammys come in self drilling metal, wood lag, concrete anchor, metal rivet, etc.
For use with 1/4 or 3/8 inch all thread.

How many do you need?

Google
Furniture joint connector
and/or
Barrel nut.
OR
McMaster Carr
Binding barrel
Probably not exactly what you seek but might be adaptable.

barrel nuts are basically screw-posts that we use for binding very thick drawing sets. don't know that they make beefy ones to hold whatever it is you want to mount.

https://www.grainger.com/produ...2295:4P7A1P:20501231

As always you all have knocked it out of the park. I have a number of options to choose from. Though I think I may have been over thinking/engineering it. I don’t have parts in hand just the pictures from the site and people complaining you have to take apart the dash to make adjustments.
I was thinking the studs coming from under the dash would have to be completely rigid on their own without the above dash portion attached.
But really this will not be the case as I really just need the studs to stay in their place and not fall when the top portion is removed to adjust the mounts.
I should be able to have the bolts come from the bottom.

From the bottom assembly will go: bolt, flat washer, under dash stiffening plate, OEM dash, then on the top of the dash utilize a clip washer, flat washer, above the dash mount, and a nylock nut.

This is what I mean by a clip washer


I should be able to remove the nylock nut and the above dash mounting bracket and my bolts coming from under the dash should stay put thanks to the clip washers.
I can then adjust my mounts and reattach the top bracket.

You all are probably lost as I don’t have any pictures at the moment as I don’t have the parts in hand just trying to figure out what I need before it arrives. I got my tracking number for the brackets today so I’ll post some pics of the install. If my new plan for the clip washer uses doesn’t work I have some backup options thanks to you all.


This is the mount and it is supposed to be very difficult to get your hand under from the side to adjust the mounting points once the top bracket is mounted to the dash stiffening plate that is under the dash.
While the plan is not to have to adjust them new equipment or issues out on the trail I don’t want to have to rip apart the dash to make changes.
My current plan is to have a mount for my navigation tablet and a mount for a couple of goPros.
One forward facing and one cab facing.

If all else fails try Boltdepot .com Located in Weymouth M.A. Good luck to you from a fellow over engineer!!

Do you have a Fastenal store nearby? Perhaps take your original pic and description over there and talk to the counter staff?

My local Fastenal guy is a hardware genius of some sort. I can show him a pic of some odd fastener or gadget, and within a couple of hours he's got stock numbers for me.