They are rated for this application; follow the links to see the specs. To be sure I double check w/ switchcraft and they confirmed they are good for exactly what I had in mind and I've never had a problem so far they don't even get warm...
They are like $4 for the outlets and $6 for the plugs.
Connectors STRAIGHT CORD PLUG
Panel mount power Outlet
I love these and was considering doing this as well Im glad to see someone else try it !!
How did they work out for you ?
I have used them in the music industry for years switchcraft/neutrik connectors.