3b thread class 32 thread quantity per inch navy special project blind tapped hole, blind end tapered 30-deg passivate surface treated blind unc thread series
2a thread class right-hand 0.153" thread length flat chamfer head style 32 thread quantity per inch axis of thd eccentric to axis of shoulder closest to head by 0.031 in. nickel surface treated unc thread series
3a thread class right-hand 0.672" thread length flat countersunk head style 20 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 0.400" thread length dished hexagon head style 0.178" grip length 28 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.387" thread length bevel-conical head style 32 thread quantity per inch pellet type insert locking element per NAS1283 type n unf thread series
