3a thread class right-hand 0.320" thread length dished hexagon head style 1.990" grip length 32 thread quantity per inch green dye or paint on thread end cadmium surface treated unjf thread series
3a thread class right-hand 0.378" thread length flat countersunk head style 0.552" grip length 28 thread quantity per inch cadmium surface treated unjf thread series
2a thread class right-hand 0.187" thread length knurled no. 1 head style 56 thread quantity per inch navy special project passivate surface treated unc thread series
3a thread class right-hand 0.470" thread length flat chamfer head style 32 thread quantity per inch navy special project passivate surface treated unc thread series