3a thread class right-hand 3.0600" overall length 0.4995" bore diameter 20 thread quantity per inch shank slotted for lock washer chromium inner member surface treated ball type unf thread series
2a thread class right-hand 0.5000" thread length 1.6562" overall length 18 thread quantity per inch furnished w/2 metal plugs for stud end oxide all external/exposed metal surfaces surface treated cam follower unf thread series
12.0mm overall width 17.00mm bore diameter 40.0 pct full of specified lubricant, selected for electric motor bearing qualities non-loading groove, non-separable