3a all ends thread class 3.4844" overall length 6 bolt hole quantity 12 all ends thread quantity per inch cadmium body surface treated male coupling half un all ends thread series
2a all ends thread class 2.312" overall length if washer is required order nsn 5330-00-252-4068, source of supply S9i (defense industrial supply center, philadelphia pa) male coupling half unf all ends thread series