2a thread class right-hand 0.809" thread length flat countersunk head style 18 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 0.262" thread length flat countersunk undercut head style 40 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 0.325" thread length flat countersunk head style 40 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 0.559" thread length flat countersunk head style 18 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 0.653" thread length flat countersunk head style 18 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand flat countersunk head style 32 thread quantity per inch oxide screw surface treated thd as close to head as practicable unc thread series