2a thread class right-hand 0.099" thread length flat countersunk undercut head style 18 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.162" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
2a thread class right-hand 0.450" thread length flat countersunk head style 40 thread quantity per inch cadmium screw surface treated unc thread series
3a thread class right-hand 0.370" grip length 9300 double pounds per square inch shear strength powder blast top of head. "caution" restricted usage, (for repair work only) . 0.0312 oversize. unjf thread series
3a thread class right-hand 0.245" grip length 5380 double pounds per square inch shear strength powder blast top of head. "caution" restricted usage (for repair work only) 0.0312 oversize. unjf thread series
3a thread class right-hand 0.307" grip length 9300 double pounds per square inch shear strength powder blast top of head. "caution" restricted usage (for repair work only) . 0.0312 oversize. unjf thread series