dimensional letters and set screws

[Geneva Olson]

Trying to find a standard size set screw (studs.) to put in the back of these letters to mount them on the wall. We are thinking of going with 1/4 screws (20 threaded) 2inchs long.
The acrylic is 1/2" acrylic.
Any advice?
Thanks!

 

[StarSign]

Our standard is a 2" 10-24 stud

 

[Bradley D]

1/4-20 or 10-24 or what we use.

 

[Geneva Olson]

so these guys will do?

 

[Bradley D]

aluminum threaded studs are what we use and are sold at your nearest Sign Supply