MS21209E (NOTICE 1), MILITARY STANDARD: INSERT, SCREW THREAD, COARSE AND FINE, SCREW LOCKING, HELICAL COIL, CRES (12 JUN 1998) [S/S BY NASM21209]

MS21209E (NOTICE 1), MILITARY STANDARD: INSERT, SCREW THREAD, COARSE AND FINE, SCREW LOCKING, HELICAL COIL, CRES (12 JUN 1998) [S/S BY NASM21209]., MS21209E dated 21 FEBRUARY 1978, is hereby canceled and superseded by NASM21209. The Part Identification Numbers (PIN) for MS21209 and the part numbers for NASM21209 are identical. The part numbers have not been changed.