In general, cheap Nikkor lenses mount is in plastic (like the 18-55 provided in some bundles) and many others are in metal.
I tried to find the documentation of some lense but on the Nikon page it does not look mentionned anywhere if the mount is plastic or metal.
Is there any other web-resources where they notice this differences or if they enumerates all lenses with plastic mount?
I know the Kenrockwell site but how I can be sure all the lenses he tested are listed?