3a thread class right-hand 0.875" thread length flat countersunk head style 0.875" grip length 24 thread quantity per inch oversize grip dia passivate surface treated unjf thread series
3a thread class right-hand 0.516" thread length flat countersunk head style 0.750" grip length 24 thread quantity per inch oversize grip dia passivate surface treated unjf thread series
2b thread class right-hand 0.250" thread length hexagon head style 32 thread quantity per inch optional undercut starting under washer face unf thread series
3a thread class right-hand 0.370" thread length flat countersunk head style 0.438" grip length 28 thread quantity per inch aluminum surface treated unjc thread series