2a thread class right-hand 0.257" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.200" thread length flat chamfer head style 40 thread quantity per inch passivate screw surface treated thread relief 0.049-0.051 in. long; 0.076 in. dia. unc thread series
2a thread class right-hand 0.183" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.015" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.202" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjf thread series
3a thread class right-hand 0.303" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
2a thread class right-hand 1.072" thread length flat countersunk head style 14 thread quantity per inch cadmium screw surface treated unc thread series