MS51531B (NOTICE-2), MILITARY STANDARD, NUT, TUBE COUPLING, 37 DEG. FLARED (27-FEB-2013) [USE SAE-J514]
MS51531B (NOTICE-2), MILITARY STANDARD, NUT, TUBE COUPLING, 37 DEG. FLARED (27-FEB-2013) [USE SAE-J514]., MS51531B, dated 17-Aug-1999, remains inactive for new design;
however, the document is valid for use.