3a thread class right-hand 0.138" thread length flat chamfer head style 32 thread quantity per inch hex drive through screw silver surface treated unf thread series
3a thread class right-hand 0.188" thread length headless (setscrew) head style 32 thread quantity per inch cadmium or zinc surface treated unc thread series
3a thread class right-hand 0.188" thread length headless (setscrew) head style 32 thread quantity per inch cadmium or zinc surface treated unc thread series