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AN470 vs MS20470 vs NASM20470

AN470 was superseded by MS20470 (FAA AC 43.13-1B). MS20470H was cancelled on 18 August 1998 and superseded by NASM20470, and the notice says the part numbers "have not been changed". The rivet is still ordered as MS20470.[1][2]

What it is

AN470
Universal head rivet[1]
MS20470
Rivet, solid, universal head, aluminum alloy and titanium columbium alloy[2]
NASM20470
The AIA document with the same title. Rev 3 is dated 31 January 2025.[3]

Status

AN470
Cancelled 14 April 1959. Superseded by MS20470.[4][1]
MS20470
Rev H (14 September 1993) cancelled 18 August 1998[2]
NASM20470
Supersedes MS20470H[2]

Part number after the change

AN470
MS20470 with the like dash number, per the MS20470H note quoted below[5]
MS20470
Unchanged. The notice's example: cancelled MS20470, replacement MS20470.[2]
NASM20470
A document number only. Parts keep the MS20470 number.[2]

This page reports what public documents print. It does not approve a substitution. The aircraft's IPC, SRM or engineering authority decides what may be installed.

Reference only: the controlling drawing, its process spec and the manufacturer's installation instructions govern. How to use these answers

What the notices and sheets say4
  • MS20470H, sheet 2, note 2, as printed: "INTERCHANGEABILITY RELATION WITH AN470 RIVETS MS20470 RIVETS OF LIKE DASH NUMBERS ARE UNIVERSALLY, FUNCTIONALLY AND DIMENSIONABLY INTERCHANGEABLE."[5]
  • MS20470H Notice 1: "MS20470H, dated 14 SEPTEMBER 1993, is hereby canceled and superseded by NASM20470. The Part Identification Numbers (PIN) for MS20470H and the part numbers for NASM20470 are identical. The part numbers have not been changed."[2]
  • FAA AC 43.13-1B, para 4-57a(4): "The universal head rivet (AN470 superseded by MS20470) has been adopted as the standard for protruding-head rivets".[1]
  • FAA AC 43.13-1B, para 7-1a: "All protruding head rivets may be replaced by MS20470 (supersedes AN470) rivets."[1]
More from the documents1
  • AC 43.13-1B reads a part number as an example: MS20470AD3-5 is a universal head rivet, 2117-T aluminum alloy, 3/32 inch diameter, 5/16 inch long.[1]
Not in a public source2
  • The AN470 sheet and its own cancellation notice. DLA ASSIST holds a record with the cancellation date and the words USE MS20470, but no document image.
  • The content of NASM20470 Rev 3 (AIA document, not read). Whether it changed any dimension since MS20470H is not in a public source.
Sources5

Sources

5

Each number above links to its document. Scanned sheets were read by eye and re-read by OCR; the check script is in the repository under docs/audit-2026-10/reddit-pages.

  1. FAA AC 43.13-1B (Change 1) (FAA)
  2. MS20470H Notice 1 (18 August 1998) (Department of Defense)
  3. AIA NAS/NASM Mailing 25-01 (31 January 2025) (Aerospace Industries Association)
  4. AN470 document record (DLA ASSIST)
  5. MS20470 Rev H (14 September 1993) (Department of Defense)

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