3b thread class right-hand 0.530" overall width 28 thread quantity per inch 3 nuts thd size 0.190-32 unjf-3b located 8 deg from 1st nut, center nut, and 7th nut thd size 0.250-28 unf-3b
3b thread class right-hand 72.000" overall length 0.609" overall width 24 thread quantity per inch navy special project color light blue fed std 595 no. 15526 anodize channel surface treated