KR> Aileron pulley bracket question

[cowgirl2...@aol.com]

Greetings
I'm currently making the aileron pulley assembly However I run into a problem 
in the drawing of the pulley bracket on page 68 it shows the screws nuts 
washers and gives the size of the alum tubing to be used for the post for the 
cable guide. My problem is when I went to order the tubing and screws both 
Wicks 
and Aircraft Spruce told me they do'nt carry those size's. Does anyone know 
where I can get these items or have a altermative I can use? 
Thanks