AN501 (REV. 6) (NOTICE 1), AIR FORCE - NAVY AERONAUTICAL STANDARD: SCREW, MACHINE, FILLISTER HEAD, FINE THREAD (21 JUN 1999) [S/S BY NASM501]

AN501 (REV. 6) (NOTICE 1), AIR FORCE - NAVY AERONAUTICAL STANDARD: SCREW, MACHINE, FILLISTER HEAD, FINE THREAD (21 JUN 1999) [S/S BY NASM501]., AN501 REV. 6, dated 12 AUGUST 1959, is hereby canceled and superseded by NASM501. The Part Identification Number (PIN) for AN501 REV. 6 and the part number for NASM501 are identical. The part numbers have not been changed