These
http://www3.towerhobbies.com/cgi-bin...4&I=LXE114&P=K make for good attachments of servo pushrods/cables at servo end if used properly.
Standard servo mounting screws should be used along with the grommets and brass eyelets. These screws can be had from a variety of places like
http://www3.towerhobbies.com/cgi-bin...&I=LXFRM2&P=ML The grommets and eyelets come with the servos but if lost find what you need here
http://www3.towerhobbies.com/cgi-bin...SERVO+hardware