3a thread class right-hand 4.1900" overall length 0.4995" bore diameter 20 thread quantity per inch keyway in shank 2.0600 in. lg, shank drilled through thd 0.0690 in. min 0.0740 in. max dia 1.0400 in. center to end chromium inner member surface treated ball type unjf thread series
0.1202/0.1205 in. dia; chamfered 30 deg 4 places 0.112/0.114 in. dia; matl saphire spun in brass as per qq-b-613a; end item 6610-00-777-7494 jewel bearing assy