Hello barmalej1,   It looks like the lever is warped somehow and the ring is broken off the end. You can see it in Young's picture.   Part#1GPKG is a Spare Part number we use in Service Repair Part numbers. You won't find it on the Dell website.   Please call into Sales and ask for the Spare Parts department and they should be able to quote you for the lid.  
Latch on my R740XD sticking out about quarter of an inch even when the lid is closed all the way. Same problem when the cover is completely removed from the server, so something is wrong with the latch itself. As a result it's always on the way when pulling the server (or the server above) out of the rack or pushing it back. Any idea how to fix it? Can just the latch be replaced or I have to replace the whole cover? If someone could help me find part numbers, that would be great.
R740XD latch