MS90520A (NOTICE), MILITARY STANDARD: FLANGES, CAST IRON (CLASS 125 AND 250) AND BRONZE (150 AND 300 LB) (18 JUN 1979) [SUPERSEDED BY WW-F-406].
MS90520A (NOTICE), MILITARY STANDARD: FLANGES, CAST IRON (CLASS 125 AND 250) AND BRONZE (150 AND 300 LB) (18 JUN 1979) [SUPERSEDED BY WW-F-406].