2a thread class right-hand 1.900" thread length 9 thread quantity per inch the head is chamfered to 45.0 degrees, and the threaded end is chamferedto 30.0 degrees unc thread series
3a thread class right-hand 0.480" thread length flat countersunk head style 28 thread quantity per inch three 0.040 in. wide by 0.029 in. deep splines in shank cadmium surface treated unf thread series
3a thread class right-hand 0.188" thread length flat chamfer head style 32 thread quantity per inch navy special project passivate surface treated unc thread series
3a thread class right-hand 2.000" thread length pan no. 2 head style 24 thread quantity per inch navy special project passivate surface treated unc thread series
2a thread class right-hand 0.380" thread length flat chamfer head style 32 thread quantity per inch altered from NAS1352C06-14 passivate surface treated unc thread series
2a thread class right-hand 0.100" thread length flat chamfer head style 0.033" hole diameter 32 thread quantity per inch passivate surface treated unc thread series