Hook for keyhole mount

I combined the ancestor hook idea with the self threading bolt idea from http://www.thingiverse.com/thing:15322
This allows the hook to lay flat for easy printing. I also added some curves for strength and aesthetics.
The hole is .125", so a 6-32 machine screw will self thread when screwed in.
2 screws required per hook.
You will need to make sure the hole spacing fits your application.