3a all ends thread class thd 12-24 nc 3, 0.250 in. deep on one end anodize inside surface treated flared w/ center wrenching facility unf all ends thread series
3a all ends thread class 2.725" overall length 6 bolt hole quantity 12 all ends thread quantity per inch grumman; A10 aircraft anodize body surface treated male coupling half un all ends thread series