2a thread class right-hand 1.126" thread length flat countersunk head style 18 thread quantity per inch navy special project passivate screw surface treated unc thread series
3a thread class right-hand flush countersunk head style 0.1825" grip length 32 thread quantity per inch 7100 double pounds per square inch shear strength cadmium surface treated unjf thread series
3a thread class right-hand 0.943" grip length 24 thread quantity per inch 95000 single pounds per square inch shear strength cadmium surface treated unjf thread series
3a thread class right-hand 0.620" thread length flat chamfer head style 20 thread quantity per inch navy special project cadmium surface treated unc thread series