3a thread class right-hand 0.694" thread length hexagon head style 0.070" hole diameter 2.115" grip length 20 thread quantity per inch unjf thread series
3a thread class right-hand 0.578" thread length dished hexagon head style 24 thread quantity per inch furnished with tab, NSN4030-01-325-2632 passivate surface treated unjf thread series
3a thread class right-hand 0.498" thread length flat countersunk head style 2.063" grip length 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.323" thread length hexagon head style 2.615" grip length 32 thread quantity per inch cadmium surface treated unjf thread series