3a thread class right-hand flat fillister head style 32 thread quantity per inch navy special project passivate fastener surface treated unc thread series
3a thread class right-hand 0.250" thread length flat fillister head style 40 thread quantity per inch navy special project passivate screw surface treated unjc thread series
jf thread class right-hand 0.4375" thread length hexagon head style 0.046" hole diameter 28 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.438" thread length hexagon head style 24 thread quantity per inch navy special project passivate surface treated unjf thread series