2a thread class right-hand 0.495" thread length hexagon head style 20 thread quantity per inch martensitic material uts 70000 psi min., yield 40000 psi min. with a rockwell b scale 235 max passivate surface treated unc thread series
2a thread class right-hand 0.610" thread length hexagon head style 18 thread quantity per inch martensitic material uts 70000 psi min., yield 40000 psi min. wita a rockwell b scale 235 max; self-locking passivate surface treated unc thread series
3a thread class right-hand 0.371" thread length spline drive shear head head style 2.178" grip length 24 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.372" thread length flat countersunk head style 0.615" grip length 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.372" thread length flat countersunk head style 0.302" grip length 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.306" thread length oval countersunk head style 0.365" grip length 32 thread quantity per inch passivate surface treated unjf thread series