2a thread class right-hand 1.700" thread length hexagon head style 20 thread quantity per inch circumferential groove 0.380 in. diameter 0.116 in. from point end unf thread series
3a thread class right-hand 0.540" thread length hexagon head style 18 thread quantity per inch nickel surface treated concentric hole unthreaded unjf thread series
3a thread class right-hand 0.374" thread length flat countersunk head style 0.802" grip length 24 thread quantity per inch cadmium surface treated unjf thread series