3a thread class right-hand 0.291" thread length flat countersunk head style 2.240" grip length 28 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.313" thread length pan head style 0.990" grip length 32 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.306" thread length headless (setscrew) head style 32 thread quantity per inch hole 0.048 in. dia drilled thru 0.055 in. from socket end unf thread series