3a thread class right-hand 1.041" thread length hexagon head style 4.494" grip length 16 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.735" thread length hexagon head style 0.315" grip length 20 thread quantity per inch passivate surface treated unjf thread series
2a thread class right-hand 1.750" thread length hexagon head style 11 thread quantity per inch configuration - screw, type - i, grade - 500, condition - solution annealed & age hardened unc thread series
2a thread class right-hand 0.440" thread length knurled no. 1 head style 20 thread quantity per inch ferrule case hardened zinc stand-off surface treated unc thread series
3a thread class right-hand 0.428" thread length flat countersunk head style 1.552" grip length 20 thread quantity per inch cadmium surface treated unf thread series