Mounting tubes in a case

[merlinb]

Gracias.  Not available at Tayda or Mammoth.   

Long screw with lots of nuts on it?

[rutabaga bob]

I don't know where you're located, but you might look at the websites of Lowes or Home Depot, or check a local hardware store.

[Cozybuilder]

Try Mouser

[digi2t]

Smallbear.

http://smallbear-electronics.mybigcommerce.com/standoffs-1/

Ebay for sure.

They also come with female ends;



or male ends;



and different lengths. All depends on what your application requirments are.

[reddesert]

PCB standoffs are also called hex couplers or hex coupling nuts sometimes. Hardware stores, ebay, amazon all have them.

[duck_arse]

25mm M3 Tapped Metal Spacers

from jaycar, cobber. other lengths as well.