rolled threads and turnbuckle 3

[klyde]

I'm trying to determine if there is a standard stocked item that is a two ended stud with Lh and rh opposing rolled threads. preferably with a wrench useable surface in the middle. Set up charges to produce the onezy, twozies that I need are too much.

 

[CoryPad]

[blue]Easy-Adjust Turnbuckle-Style Threaded Connecting Rods[/blue] on page 1134 of the McMaster-Carr catalog:

http://www.mcmaster.com/

Regards,

Cory

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[EdStainless]

If you need a rod with a flat or hex center an opposite threads (male) on the ends most roll thread shops should be able to make these in a small number. This is fairly standard tooling for some clamping systems.

= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection

http://www.trent-tube.com/contact/Tech_Assist.cfm

 

[csd72]

What you are asking for is the opposite to a sleeve nut which is readily available for steel construction.

Perhaps you could get two lengths of threaded rod and insert those into a sleeve nut.

http://www.portlandbolt.com/products/nuts/sleeve_nuts.html

 

[klyde]

Cory: Thanks for the note on McMaster catalog. Their item is exactly what I was looking for except it is 6061-T6 and I forgot to mention that I was needing grade 5 or grade 8 steel. I've e-mailed McMaster for possible source.

 

[klyde]

EdStainless: I got a quote for a small number of these things from one shop and the set up charge was $500. Ouch.

 

[btrueblood]

see cat. page 3093

 

[btrueblood]

Sorry, a) that's the McMaster catalog, specifically, and b) those don't have the hex in the center.

 

[klyde]

btrueblood. Yikes what McMaster catalog are you looking at? and what is the description? My page 3093 has quick release pins.
Also recent quote from another shop was $198 each for 10..
Thanks

 

[btrueblood]

Huh. I was looking at the online version,

http://www.mcmaster.com

- type 3093 into the search field.

 

[sdz]

For structural applications you also must specify the grade of turnbuckle you need. In Australia you can get Commercial, and Grades G, P, S. To match the strength of a same size mild steel bar (fy=250 MPa) I would specify Grade P. You must make sure that the rod will yield before you get failure in the turnbuckle.