MS21297A (NOTICE 4), MILITARY STANDARD: BOLT, TENSION, STEEL, 220 KSI FTU, 450 DEG. F, EXTERNAL WRENCHING, SPLINE DRIVE, FLANGED HEAD (16 MAR 2000) [SUPERSEDED BY NASM21297]

MS21297A (NOTICE 4), MILITARY STANDARD: BOLT, TENSION, STEEL, 220 KSI FTU, 450 DEG. F, EXTERNAL WRENCHING, SPLINE DRIVE, FLANGED HEAD (16 MAR 2000) [SUPERSEDED BY NASM21297].