3a thread class right-hand 1.870" thread length 2.570" overall length 18 thread quantity per inch threaded end has internal hole 1.20 in. deep ball unf thread series
2a thread class right-hand 1.250" thread length 8.250" overall length 12 thread quantity per inch threaded end 2 holes 0.187 in. dia, 180 deg apart, distance holes centerline to end 0.243" cadmium surface treated threaded shank ball unf thread series
2a thread class right-hand 0.250" thread length 0.671" overall length 32 thread quantity per inch navy special project cadmium surface treated ball unc thread series