Cross reference · SPS Technologies · Plate self-locking nut

M12700E cross referenceHowmet MK1001, MS21070L

M12700E is a SPS plate self-locking nut series on 9 government stock numbers. Its closest equivalents are Howmet MK1001, MS21070L. Each one is labeled with how strong the evidence is.

Equivalents in the government catalog

9 stock numbers

Catalog-only listings need engineering approval before you substitute.

Manufacturers

  • MK1001Howmet Fastening SystemsCatalog only, needs approvalon 3 of 9 stock numbers, 3 sizes
  • RMLHTA51MESNACatalog only, needs approvalon 2 of 9 stock numbers, 2 sizes
10 more on one stock number each: 109A9201M, BRM200C4M, MK2000, MT2C1032M, MT2C428M, MT2C832BCM, MT2C832M, MTL2C440BCM, MTL2C440M, MTL2C632BCM
  • 109A9201MESNACatalog only, needs approvalon 1 of 9 stock numbers
  • BRM200C4MHowmet Fastening SystemsCatalog only, needs approvalon 1 of 9 stock numbers
  • MK2000Howmet Fastening SystemsCatalog only, needs approvalon 1 of 9 stock numbers
  • MT2C1032MCherry AerospaceCatalog only, needs approvalon 1 of 9 stock numbers
  • MT2C428MCherry AerospaceCatalog only, needs approvalon 1 of 9 stock numbers
  • MT2C832BCMCherry AerospaceCatalog only, needs approvalon 1 of 9 stock numbers
  • MT2C832MCherry AerospaceCatalog only, needs approvalon 1 of 9 stock numbers
  • MTL2C440BCMCherry AerospaceCatalog only, needs approvalon 1 of 9 stock numbers
  • MTL2C440MCherry AerospaceCatalog only, needs approvalon 1 of 9 stock numbers
  • MTL2C632BCMCherry AerospaceCatalog only, needs approvalon 1 of 9 stock numbers

Standards

  • MS21070LMSCatalog only, needs approvalon 5 of 9 stock numbers, 4 sizes
5 more on one stock number each: NAS697C06LM, MS21070L04K, MS21070L06K, MS21070L08K, MS21071L3K
  • NAS697C06LMNASCatalog only, needs approvalon 1 of 9 stock numbers
  • MS21070L04KMSCatalog only, needs approvalon 1 of 9 stock numbers
  • MS21070L06KMSCatalog only, needs approvalon 1 of 9 stock numbers
  • MS21070L08KMSCatalog only, needs approvalon 1 of 9 stock numbers
  • MS21071L3KMSCatalog only, needs approvalon 1 of 9 stock numbers

Airframer and OEM drawings

    2 more on one stock number each: BACN10JP4ACM, Z00N
    • BACN10JP4ACMBoeingCatalog only, needs approvalon 1 of 9 stock numbers
    • Z00NDaherCatalog only, needs approvalon 1 of 9 stock numbers

    Plus 6 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).

    Get quotes for M12700E

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

    Install tooling

    SpecLok has no catalog family for M12700E. Tooling for the equivalents:

    None of the equivalents is in the SpecLok catalog yet.

    What the government paid

    DLA awards on 4 of 9 stock numbers, 7 awards from 2023-05-03 to 2026-05-04.

    Latest award per stock number: $0.50 to $4.00 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

    9 stock numbers
    Part numbers DLA FLIS lists for M12700E and its equivalents, by stock number
    NSNM12700EMK1001RMLHTA51MMT2C1032MMS21070LNAS697C06LMLast DLA price
    5310-00-728-9458M12700E-02MT2C1032MMS21070L3$1.03 2026-05
    5310-00-728-8528M12700E-40MS21070L04$0.50 2024-05
    5310-00-728-9459M12700E-048MK1001-4BACRMLHTA51M2860-048MS21070L4$1.19 2025-11
    5310-00-728-8529M12700E-62MS21070L06NAS697C06LM
    5310-00-728-9461M12700E-82MS21070L08
    5310-00-764-1790M12700E-02BC$4.00 2026-04
    5310-00-762-6134M12700E-40BC
    5310-00-544-8664M12700E-62BCMK1001-06BC
    5310-00-762-6132M12700E-82BCMK1001-08BCRMLHTA51M2860-82BC

    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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