3a thread class right-hand 0.590" thread length headless (setscrew) head style 48 thread quantity per inch navy special project passivate surface treated unf thread series
3a thread class right-hand 0.500" thread length hexagon head style 1.707" grip length 28 thread quantity per inch cadmium head surface treated unf thread series
2a thread class 0.178" thread length flat chamfer head style 28 thread quantity per inch thd end externally relieved to 0.2002 in. min 0.2007 in. max dia unf thread series
2a thread class right-hand hexagon head style 13 thread quantity per inch stotted hub; four slots passivate surface treated concentric hole unthreaded unc thread series
2a thread class right-hand 0.312" thread length knurled no. 1 head style 20 thread quantity per inch cone point 90 deg of angle passivate surface treated unc thread series
3a nut thread thread class right-hand nut thread 0.615" nut thread thread length 5.935" overall length 18 stud thread thread quantity per inch shank dia 0.245 in. min, 0.240 in. max cadmium surface treated unc stud thread thread series
