3a thread class right-hand 1.9520" overall length 0.2500" bore diameter 24 thread quantity per inch chromium inner member surface treated ball type unf thread series
3a thread class right-hand 2.4380" overall length 0.3745" bore diameter 20 thread quantity per inch w/nas 599 keyway chromium inner member surface treated ball type unf thread series
3a thread class left-hand 1.7800" overall length 0.2500" bore diameter 28 thread quantity per inch with grease fittings cadmium all external/exposed metal surfaces surface treated single row, concave rollers unjf thread series
14.0mm overall width 20.0mm bore diameter quiet tested for electric motor quality; 10 to 20 percent full of specified lubricant non-loading groove, non-separable