"STEEL,AMS 5643,0.860 IN. LG,0.622 IN. MIN,0.624 IN. MAX OD,0.389 IN. MIN,0.396 IN. MAX DIA INTERNAL DRIVE W/0.376 IN. NOM SQ DRIVE ADAPTION,0.375 IN. MIN,0.377 IN. MAX DIA THROUGH CENTER HOLES AT 90.0 DEG TO DRIVE HOLE 0.504 IN. FROM END,1 EA 0.094 IN. DIA THROUGH CENTER HOLE 0.112 IN. FROM END,1 EA 0.010 IN. MIN,0.015 IN. MAX DEEP INDEX LINE ON END CENTERED ON LESSER DIA HOLE"