3a thread class right-hand 0.406" thread length hexagon head style 5.109" grip length 32 thread quantity per inch anodize or chromate surface treated unf thread series
2a thread class right-hand 0.750" thread length 24 thread quantity per inch navy special project passivate surface treated round bend unf thread series
3a thread class right-hand 0.252" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unjc thread series
Used on spec item. 3a thread class right-hand 0.608" thread length hexagon head style 5.922" grip length 24 thread quantity per inch passivate surface treated unf thread series