MS172321 THRU MS172370 (REV. B) (NOTICE 2), MILITARY STANDARD: NUT - SPANNER, AERONAUTICAL (31 AUG 2000) [S/S BY SAE-AS172321 THRU AS172370]

MS172321 THRU MS172370 (REV. B) (NOTICE 2), MILITARY STANDARD: NUT - SPANNER, AERONAUTICAL (31 AUG 2000) [S/S BY SAE-AS172321 THRU AS172370]., MS172236 THRU MS172270B, dated 1 FEBRUARY 1996, is hereby canceled and superseded by AS172236 THRU AS172270. The Part Identification Number (PIN) for MS172236 THRU MS172270B and the part number for AS172236 THRU AS172270 are identical. The part numbers have not been changed.