Cross reference · SPS Technologies · Plate self-locking nut

M12620 cross referenceHowmet MK3000, Cherry MT7S, MS21073L

M12620 is a SPS plate self-locking nut series on 8 government stock numbers. Its closest equivalents are Howmet MK3000, Cherry MT7S, MS21073L. Each one is labeled with how strong the evidence is.

Equivalents in the government catalog

8 stock numbers

Catalog-only listings need engineering approval before you substitute.

Manufacturers

  • MK3000Howmet Fastening SystemsCatalog only, needs approvalon 6 of 8 stock numbers, 7 sizes
  • RM300AHowmet Fastening SystemsCatalog only, needs approvalon 3 of 8 stock numbers, 2 sizes
  • MT7SCherry AerospaceCatalog only, needs approvalon 2 of 8 stock numbers, 2 sizes
8 more on one stock number each: MT7S428BC, MTL7S, MTL7S440BC, MTL7S632BC, RM300A04K, RM300A06K, RM300A3K, RM300A4K
  • MT7S428BCCherry AerospaceCatalog only, needs approvalon 1 of 8 stock numbers
  • MTL7SCherry AerospaceCatalog only, needs approvalon 1 of 8 stock numbers
  • MTL7S440BCCherry AerospaceCatalog only, needs approvalon 1 of 8 stock numbers
  • MTL7S632BCCherry AerospaceCatalog only, needs approvalon 1 of 8 stock numbers
  • RM300A04KHowmet Fastening SystemsCatalog only, needs approvalon 1 of 8 stock numbers
  • RM300A06KHowmet Fastening SystemsCatalog only, needs approvalon 1 of 8 stock numbers
  • RM300A3KHowmet Fastening SystemsCatalog only, needs approvalon 1 of 8 stock numbers
  • RM300A4KHowmet Fastening SystemsCatalog only, needs approvalon 1 of 8 stock numbers

Standards

  • MS21073LMSCatalog only, needs approvalon 3 of 8 stock numbers, 2 sizes
7 more on one stock number each: NAS21073L, NAS698A, NASM21073L, MS21073L04K, MS21073L06K, MS21073L3K, MS21073L4K
  • NAS21073LNASCatalog only, needs approvalon 1 of 8 stock numbers
  • NAS698ANASCatalog only, needs approvalon 1 of 8 stock numbers
  • NASM21073LNASCatalog only, needs approvalon 1 of 8 stock numbers
  • MS21073L04KMSCatalog only, needs approvalon 1 of 8 stock numbers
  • MS21073L06KMSCatalog only, needs approvalon 1 of 8 stock numbers
  • MS21073L3KMSCatalog only, needs approvalon 1 of 8 stock numbers
  • MS21073L4KMSCatalog only, needs approvalon 1 of 8 stock numbers

Airframer and OEM drawings

    4 more on one stock number each: BACN10AM5C, GN10C, NT9734, Z00N
    • BACN10AM5CBoeingCatalog only, needs approvalon 1 of 8 stock numbers
    • GN10CNorthrop GrummanCatalog only, needs approvalon 1 of 8 stock numbers
    • NT9734Northrop GrummanCatalog only, needs approvalon 1 of 8 stock numbers
    • Z00NDaherCatalog only, needs approvalon 1 of 8 stock numbers

    Plus 5 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).

    Get quotes for M12620

    Cited equivalents go on the request as acceptable alternates. Catalog-only listings do not.

    Install tooling

    SpecLok has no catalog family for M12620. Tooling for the equivalents:

    None of the equivalents is in the SpecLok catalog yet.

    What the government paid

    DLA awards on 1 of 8 stock numbers, 6 awards from 2025-03-11 to 2026-05-13.

    Latest award per stock number: $0.84 each.

    Per size in the table below.

    DLA prices at DLA quantities, not a quote.Source

    DLA award prices at DLA quantities and terms, not a commercial quote. Each award may bundle packaging, delivery and inspection terms that a commercial buy does not. Vendors are shown by CAGE code only.

    Source: DLA FOIA Electronic Reading Room ↗, public FOIA releases. Files: 2023ContHist.zip/2023ContractHistory.txt, 2024ContHist.zip/2024ContractHistory.txt, contracthist2025.zip/contracthist2025.txt, 2026-09-16-1038_contracthist.zip/2026-09-16-1038_contracthist.txt.

    Sizes by maker

    8 stock numbers
    Part numbers DLA FLIS lists for M12620 and its equivalents, by stock number
    NSNM12620MK3000MT7SMS21073LNAS21073LBACN10AM5CLast DLA price
    5310-00-761-4221M12620-02MT7S1032MS21073L3
    5310-00-761-6880M12620-40MK3000-440MS21073L04
    5310-00-761-6830M12620-048MK3000-4MT7S428MS21073L4NAS21073L4BACN10AM5C4$0.84 2026-05
    5310-00-559-0491M12620-82MK3000-832
    5310-00-763-3948M12620-02BCMK3000-3BC
    5310-00-763-3950M12620-048BC
    5310-00-763-3935M12620-40BCMK3000-04BC
    5310-00-763-3936M12620-62BCMK3000-06BC

    Each row is one National Stock Number and the part numbers DLA FLIS lists on it, as written there. A blank means FLIS lists no part in that series on the stock number, not that the size does not exist.

    Sources and how to read this page.Details

    Reference numbers the Federal Logistics Information System records against the same National Stock Number. A supply-catalog cross-reference, not an engineering-approved interchangeability: confirm against the controlling drawing or spec before substituting. Only equivalents marked cited have a manufacturer or government document, linked with each.

    Source: DLA Federal Logistics Information System, via DLA PUB LOG ↗ (FLIS Data Electronic Reading Room ↗), data as of 2025-03-18 (March 2025 snapshot). Federal supply class 5310 Nuts and washers. Issuer names are SpecLok's reading of the filing CAGE code; distributors are not named. Compiled 2026-10-02.

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