Double sided bolt 2

[Bucevic]

Hei,

could you help me with proper English name for double sided bolts and suppliers for them. Bolt needs to have two opposite threads on each side with a hexagonal shape in the middle that can't be removed.

Or, the name of a part which has innear thread on the leaft side, threaded in left direction, and on the right side a bolt, threaded in a right direction.

Or, both sides to be with inner threads.

Maybe is a variation of a stud, but with different direction threads and with an unmovable nut in the middle.

 

[desertfox]

Hi

I would call it a stud even with two different threads at each end, I guess you will be providing a drawing to whoever is supplying it?

 

[rb1957]

i'd call this a "connector" to change a M6 male thread (so M6 female thread) into an M8 male thread, and you can change the thread pitch (though the M6 has to match, obviously). i think you'd want to have both threads rotate in the same direction, RH or LH. i think it'd be a specialised part, something you'd design and make, rather than buy.

another day in paradise, or is paradise one day closer ?

 

[Jboggs]

check here:

http://www.midwestcontrol.com/series.php?id=89

 

[Screwman1]

We would call that an M6 X M8, XXX OA double end hex collar stud.

 

[DubMac]

Turnbuckle nut?

 

[MintJulep]

That is a non-standard thing and therefore there is no standard name for it.

It will be a custom made part.

How it's made will depend on the quantities you need, and that in-turn will decide the potential manufacturers.

You will need a drawing.

 

[Bucevic]

Thank you all for your responses, guess i'm going to have to make it.

 

[Jboggs]

I'm curious why the item from Midwest Control won't work. Looks to me like it exactly matches your description.

 

[TVP]

Jboggs,

It looks like the OP wants one end to be an M6 internal thread, with the other end an M8 external thread. Midwest Control only shows regular double ended studs.

 

[boo1]

use a hex bar turnbuckle with a stud

 

[3DDave]

These guys are so close -

https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=1745

I can't picture this as off any shelf, particularly with the lh/rh thread combination.

 

[Bucevic]

Concerning "Midwest Control" first I had a problem accessing their catalogs, then I have noticed that they only have parts with the same size of threads on each side (Adapters, Studs and Turnbuckles).

boo1, for me to use a hex bar turnbuckle with a stud I would still have to find one of them that has a different size of threads and different rotations. And I would have an unnecessary connection which will cause me a problem. They also have something called step down/up adaptors and they have different thread sizes but not directions.

3DDave, yeah, if they had sizes larger than M6 (I need M8) and a hexagonal shape not the hole, that would be it.

 

[racookpe1978]

How many do you need? When do you need them? When is your re-order date? if any.
What material?
How accurate/what kind of spec? or tolerance?

There are companies that make these to your dwg, even if not a "named" common part?

 

[mdossaji]

I normally use the word "standoff"