Google is your friend... I high-lighted "NH-D14" from your question and googled it...
Guess what? The answer popped up in the very first link...http://noctua.at/main.php?show=productview&products_id=34&lng=en
Quote from Noctua's website... (2nd to last, last visited, 25/12/2011)
"SecuFirm2™ multi-socket mounting system
Noctua’s enthusiast grade SecuFirm2™ multi-socket mounting provides broad socket compatibility (LGA1366, LGA1156, LGA1155, LGA775, AM2, AM2+, AM3, AM3+, FM1) and meets the highest demands in safety, contact pressure and ease-of-use."