2a thread class right-hand 0.227" thread length flat countersunk head style 40 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 0.164" thread length flat countersunk head style 40 thread quantity per inch cadmium screw surface treated unc thread series
2a nut thread thread class right-hand nut thread 1.090" stud thread thread length 5.410" overall length 11 stud thread thread quantity per inch 0.650 in. min., 0.680 in. max of stud end is class 2a thread for starting passivate surface treated recessed unf nut thread thread series