3a thread class right-hand 0.831" thread length flat countersunk head style 0.250" grip length 28 thread quantity per inch navy special project cadmium surface treated unf thread series
3a thread class right-hand 0.641" thread length dished hexagon head style 1.178" grip length 16 thread quantity per inch cadmium surface treated unjf thread series
2a thread class right-hand 0.880" thread length flat chamfer head style 32 thread quantity per inch navy special project oxide surface treated unrf thread series
2a thread class right-hand 0.728" thread length hexagon head style 18 thread quantity per inch passivate screw surface treated undercut between the thd unc thread series
3a thread class right-hand 0.442" thread length flat countersunk undercut head style 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.399" thread length flat chamfer head style 0.044" hole diameter 28 thread quantity per inch passivate surface treated unrf thread series
3a thread class right-hand 0.459" thread length hexagon head style 32 thread quantity per inch slot through shank, 0.044 in. min 0.054 in. max width cadmium surface treated unf thread series
3a thread class right-hand 0.618" thread length double hexagon extended washer head style 1.365" grip length 24 thread quantity per inch green dye or paint on threads cadmium surface treated unjf thread series