If theres enough finger, you my need stitches, also depends on what you you cut it on anything rusty or dirty, get shots, i had the lid of a rubbish skip drop on the end of my finger, if it'd been a little further down i would have needed stitches, but i had bandages holding the tip of finger on while it healed.
Fingernails will grow back but keep an eye on it.
Shouldn't be any need for stitches, not that much taken off (from what I saw). I've done worse to myself and never needed any

. I'm not worried about it.
This must be some Australian lingo, as I have no idea what you are talking about.
Probably referring to http://www.superiorwaste.com.au/wp-content/uploads/2010/01/IMG_7702-300x224.jpg.