2a thread class right-hand 0.129" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 0.309" thread length pan no. 2 head style 40 thread quantity per inch navy special project top center of head has 0.125 inch dia by 0.016 inch depression unc thread series
2a thread class right-hand 0.481" thread length fillister head style 40 thread quantity per inch navy special project passivate screw surface treated unc thread series
2a thread class right-hand 0.516" thread length flat chamfer head style 56 thread quantity per inch navy special project passivate screw surface treated unc thread series
3a thread class right-hand 0.703" thread length binding head style 48 thread quantity per inch navy special project passivate screw surface treated unc thread series
3a thread class right-hand 0.953" thread length binding head style 48 thread quantity per inch navy special project passivate screw surface treated unc thread series
3a thread class right-hand 0.265" thread length binding head style 48 thread quantity per inch navy special project passivate screw surface treated unc thread series
2a thread class right-hand 0.231" thread length pan head style 40 thread quantity per inch passivate screw surface treated head painted dark gray color no. 36231 fed-std-595 unc thread series
2a thread class right-hand 0.344" thread length pan head style 32 thread quantity per inch head painted dark gray color no 36231 fed std 595 unc thread series