2a thread class right-hand 0.533" thread length pan head style 32 thread quantity per inch cadmium screw surface treated furnished with boot type nylon washer 0.375 in. o.d. head unc thread series
3a thread class right-hand 0.500" thread length headless (setscrew) head style 18 thread quantity per inch internally knurled cup point phosphate surface treated unc thread series
3a thread class right-hand 0.553" thread length dished hexagon head style 0.928" grip length 24 thread quantity per inch cadmium surface treated unjf thread series