3a thread class right-hand 0.300" thread length hexagon head style 24 thread quantity per inch spherical extension on head 0.245 to 0.255 of an inch in diameter. extending 0.875 of an inch above head flats unjf thread series
3a thread class right-hand 0.444" thread length flat countersunk head style 0.552" grip length 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.366" thread length flat countersunk head style 0.552" grip length 24 thread quantity per inch passivate surface treated unjf thread series
