3a thread class right-hand 0.183" grip length 32 thread quantity per inch 4010 double pounds per square inch shear strength surface coating hi-shear spec 305 ty 1, color blue unjc thread series
3a thread class right-hand 0.345" thread length dished hexagon head style 3.302" grip length 28 thread quantity per inch cadmium surface treated unjf thread series