Sockets for Lamp Making

I have the parts to make lamps including sockets. I have the separate parts available. Need just the cover for the interior piece? 
http://www.shadesetc.ecrater.com/p/4709414/push-thru-socket-shell

I have that too.Just need an end cap? I have that.

http://www.shadesetc.ecrater.com/p/4709441/socket-cap

Need an interior push-thru part?  I have that.

 http://www.shadesetc.ecrater.com/p/4709422/push-thru-interior-socket