3a thread class right-hand 0.813" thread length square head style 0.120" hole diameter 24 thread quantity per inch passivate surface treated unc thread series
2a thread class right-hand 0.217" thread length headless (setscrew) head style 18 thread quantity per inch hole 0.312 in. dia by 0.406 in. lg along longitudinal axis in thd end uns thread series
3a thread class right-hand 0.222" thread length headless (setscrew) head style 32 thread quantity per inch 2drilled holes in threaded end 0.053 in dia unf thread series