2a thread class right-hand 1.096" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.464" thread length flat countersunk head style 24 thread quantity per inch navy special project passivate screw surface treated unf thread series
3a thread class right-hand 0.696" thread length flat countersunk head style 24 thread quantity per inch passivate screw surface treated unjf thread series
2a thread class right-hand 0.308" thread length fillister head style 56 thread quantity per inch navy special project passivate screw surface treated unc thread series
3a thread class right-hand 0.374" thread length hexagon head style 3.359" grip length 32 thread quantity per inch passivate surface treated unf thread series
2a nut thread a thread class right-hand nut thread a 2.250" nut thread a thread length 13.735" overall length 8 nut thread a thread quantity per inch un nut thread a thread series
3a thread class right-hand 0.426" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unjf thread series
3a thread class right-hand 0.225" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.251" grip length 2300 single pounds per square inch shear strength
2a nut thread thread class right-hand nut thread 0.620" stud thread thread length 4.300" overall length 20 nut thread thread quantity per inch nut end thd flatted one side 0.022 in. deep 1.000 in. max lg from end unc nut thread thread series