Forging per ind6400, 125 microinch finish all over, heat to 1550 degrees f for 4 hrs and cool in air then heat to 1400 degrees f for 16 hrs and cool in air, penetrant inspection per ind 8002 class b, 3.207 in. Min 3.212 in. Max o/a dia, 0.965 in. Min 0.975 in. Max o/a lg