1.8 LITER. AUTO TRANS. Shield bolt. A screw that is used to secure the CV Joint Splash Shield to it's mounting point. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the CV Joint Splash Shield. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the CV Joint Splash Shield to it's mounting point. retainer. CV Nut.