Clamp thread?

[jimbo84]

I’m in need of some threaded bar, with a very coarse thread, of the type you get on G clamps and the likes.

Does anyone know what they call that type of thread?

It’s for a couple of screws to raise and lower a roof vent. Worst case would be buy a couple of cheap clamps and cannibalise them for the thread but if it was available as threaded bar/nuts that would be more suitable.

 

[mtt.tr]

Acme thread will find you what you are after

 

[Seadog]

Acme, square, or trapezoidal.

 

[eLuSiVeMiTe]

https://www.accu.co.uk/en/carbon-st...zMg0Fv9K0dFwqR4qiRbKPu-Qxp8CAxIhoCqogQAvD_BwE

 

[jimbo84]

Awesome, thank you.

 

[Maker]

How long do you need? I've got a couple of bits about 10" long from broken linear actuators I could send your way.

 

[Dcal]

What about Divi bar and nuts? It's an even coarser thread.

http://www.specialistconstructionsupplies.co.uk/our-products/concrete-formwork--shuttering-products

 

[frank horton]

Dcal
First came across that type when working abroad....didn’t know they weee used in the IK....
Bit expensive unless u use them a lot....
I use normal studding and plastic tube for my jobs all v cheap but a bit fiddly tho...
Ta

 

[jimbo84]

How long do you need? I've got a couple of bits about 10" long from broken linear actuators I could send your way.

Thanks for the offer, very kind of you but I went to my local engineering supplies place this morning but they didn’t have any, just gone for the coarsest threaded bar they did, something BSP, can’t remember exactly. It’ll just mean a few more turns to get it open.

 

[Wightsparks]

Acme thread and nuts can be expensive - but old car scissor jacks are cheap...