2a thread class right-hand 0.375" thread length pan head style 32 thread quantity per inch w/one fluorosilicone o-ring per mil-r-25988 oxide surface treated unf thread series
3a thread class right-hand 0.579" thread length flat countersunk head style 24 thread quantity per inch cadmium screw surface treated unjf thread series
3a thread class right-hand 0.505" thread length flat chamfer head style 16 thread quantity per inch navy special project oxide surface treated unc thread series
3a thread class right-hand 0.480" thread length flat chamfer head style 18 thread quantity per inch navy special project oxide surface treated unc thread series