Used on acft eng j-57,tf-33. 0.9950" overall width 4.3304" bore diameter xthree points on land riding surf out of round equally spaced 120 degrees apart; engineering critical; cage silver plated 0.0010-0.0020 thk per ams 2412 on land riding surf non-loading groove, non-separable
3a thread class right-hand 0.7720" thread length 3.4700" overall length 16 thread quantity per inch chromate exposed face surface treated cam follower unf thread series