3b 2nd end thread class 12 2nd end thread quantity per inch 3.250 in. dia by 0.300 in. thk mtg flange located 0.400 in. from boss end face, with six 0.229 in. min, 0.240 in. max dia mtg holes equally spaced on 2.625 in. bolt circle dia unj 2nd end thread series
Used on 02n strategic weapon systems (poseidon and trident). 2a all ends thread class grumman A10 aircraft passivate surface treated unf all ends thread series
Used on f-18 aircraft. 3a all ends thread class drill 2 holes center of hex 0.065 min 0.075 max in. od anodize surface treated unjf all ends thread series
