2a thread class right-hand 0.630" thread length hexagon head style 1.120" grip length 28 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.684" thread length hexagon head style 0.042" hole diameter 20 thread quantity per inch cadmium surface treated unjc thread series
2a thread class right-hand 0.875" thread length hexagon extended washer head style 16 thread quantity per inch phosphate zinc surface treated unc thread series
3a thread class right-hand 1.500" thread length double hexagon extended washer head style 0.500" grip length 13 thread quantity per inch unc thread series
3a thread class right-hand 2.281" thread length hexagon head style 0.070" hole diameter 18 thread quantity per inch cadmium surface treated unjf thread series