3a thread class right-hand 0.500" thread length headless (setscrew) head style 32 thread quantity per inch cadmium or zinc surface treated unf thread series
3a thread class right-hand 0.735" thread length dished hexagon head style 4.740" grip length 20 thread quantity per inch cadmium surface treated unjf thread series
3a nut thread thread class right-hand nut thread 0.360" stud thread thread length 1.140" overall length 32 nut thread thread quantity per inch navy special project internal drive socket on nut end 0.094 in min, 0.096 inmax width between flats, 0.100 in min, 0.120 in max deep shouldered unjf nut thread thread series