2a thread class right-hand 0.440" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.195" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.361" thread length flat countersunk undercut head style 28 thread quantity per inch cadmium screw surface treated concentric hole 0.1596 in. min dia, 0.1675 in. max dia, 0.190 in. thd dia 32 thds per in. countersunk 90 deg, 0.156 in. min dia, 0.187 in. max dia, 0.393 in. min; 0.413 in. max lg unjf thread series
3a thread class right-hand 0.328" thread length pan no. 2 head style 32 thread quantity per inch cadmium screw surface treated internal drive ribbed unjc thread series
Used on aircraft, b-1b. 3a thread class right-hand 0.252" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
2a thread class right-hand 1.083" thread length flat countersunk head style 16 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 1.013" thread length pan head style 40 thread quantity per inch passivate or oxide film screw surface treated unc thread series
3a thread class right-hand 0.323" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjf thread series
3a thread class right-hand 0.323" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjf thread series
3a thread class right-hand 0.313" thread length pan no. 2 head style 32 thread quantity per inch cadmium screw surface treated internal drive ribbed unjc thread series
