3a thread class right-hand 0.500" thread length headless (setscrew) head style 32 thread quantity per inch 2 drilled holes 0.047 in. dia in drive end unc thread series
3a thread class right-hand 0.300" thread length flat chamfer head style 0.064" hole diameter 24 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.562" thread length headless (setscrew) head style 20 thread quantity per inch cadmium or zinc surface treated unc thread series
3a thread class right-hand 0.500" thread length headless (setscrew) head style 28 thread quantity per inch 0.250 in drilled hole in thd cadmium surface treated unef thread series
3a thread class right-hand headless (setscrew) head style 40 thread quantity per inch socket drive, 0.0500 in. min, 0.0510 in. max w between flats; 3/16 in. 1.010 lg cadmium surface treated unc thread series
