3a thread class right-hand 0.152" thread length flat countersunk undercut head style 56 thread quantity per inch navy special project passivate screw surface treated unjc thread series
3a thread class right-hand 0.231" thread length flat countersunk undercut head style 40 thread quantity per inch passivate screw surface treated unjc thread series
2a thread class right-hand 0.113" thread length flat countersunk head style 64 thread quantity per inch anodize screw surface treated unf thread series
3a thread class right-hand 0.250" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unf thread series
3a thread class right-hand 0.168" thread length undercut pan no. 2 head style 32 thread quantity per inch navy special project passivate screw surface treated unjf thread series
2a thread class right-hand 1.300" thread length hexagon extended washer head style 10 thread quantity per inch phosphate surface treated unc thread series