2a thread class right-hand 0.347" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.470" thread length undercut universal head style 28 thread quantity per inch cadmium screw surface treated double shear in strength 10600 lbs ultimate tensile, dry film lubricat unjf thread series
3a thread class right-hand 0.225" thread length flat countersunk head style 28 thread quantity per inch passivate screw surface treated unjf thread series
2a thread class right-hand 0.298" thread length watertight head style 32 thread quantity per inch oxide screw surface treated furnished with one silicone rubber o-ring unc thread series