Used on b-2 bomber. 3a thread class right-hand flush countersunk head style 0.375" grip length 5380 double pounds per square inch shear strength unjf thread series
3a thread class right-hand 0.183" 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 0.245" 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
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