2a thread class right-hand 1.417" thread length pan no. 2 head style 24 thread quantity per inch navy special project zinc screw surface treated unc thread series
3a thread class right-hand 0.542" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unjf thread series
2a thread class right-hand 0.170" thread length flat countersunk head style 80 thread quantity per inch passivate screw surface treated unf thread series
2a thread class right-hand 0.298" thread length pan head style 32 thread quantity per inch o-ring seal material: etyylene-propylene. o-ring seal is completely contained within the head unc thread series