Cross reference · ESNA · Plate self-locking nut

F52LHTA cross referenceMS21059

F52LHTA is a ESNA plate self-locking nut series on 35 government stock numbers. Its closest equivalents are MS21059. Each one is labeled with how strong the evidence is.

Equivalents in the government catalog

35 stock numbers

Catalog-only listings need engineering approval before you substitute.

Manufacturers

  • 13615NMSPS TechnologiesCatalog only, needs approvalon 7 of 35 stock numbers, 7 sizes
  • F2000Howmet Fastening SystemsCatalog only, needs approvalon 7 of 35 stock numbers, 7 sizes
  • 13605NMSPS TechnologiesCatalog only, needs approvalon 6 of 35 stock numbers, 6 sizes
  • RF200XHowmet Fastening SystemsCatalog only, needs approvalon 6 of 35 stock numbers, 4 sizes
  • 12610NMSPS TechnologiesCatalog only, needs approvalon 4 of 35 stock numbers, 4 sizes
  • 12620NMSPS TechnologiesCatalog only, needs approvalon 4 of 35 stock numbers, 4 sizes
  • 13650NMSPS TechnologiesCatalog only, needs approvalon 4 of 35 stock numbers, 4 sizes
  • RF100XHowmet Fastening SystemsCatalog only, needs approvalon 4 of 35 stock numbers, 4 sizes
  • R1000XHowmet Fastening SystemsCatalog only, needs approvalon 3 of 35 stock numbers, 3 sizes
  • 12600NMSPS TechnologiesCatalog only, needs approvalon 2 of 35 stock numbers, 2 sizes
  • F5000Howmet Fastening SystemsCatalog only, needs approvalon 2 of 35 stock numbers, 2 sizes
  • K3000Howmet Fastening SystemsCatalog only, needs approvalon 2 of 35 stock numbers, 2 sizes

Standards

  • MS21059MSCatalog only, needs approvalon 10 of 35 stock numbers, 8 sizes
  • MS21061MSCatalog only, needs approvalon 7 of 35 stock numbers, 7 sizes
  • MS21051MSCatalog only, needs approvalon 5 of 35 stock numbers, 5 sizes
  • MS21055MSCatalog only, needs approvalon 5 of 35 stock numbers, 5 sizes
  • MS21047MSCatalog only, needs approvalon 2 of 35 stock numbers, 2 sizes
  • MS21049LMSCatalog only, needs approvalon 2 of 35 stock numbers, 2 sizes
6 more on one stock number each: NAS686X, NASM21047, NASM21051, NASM25027, MS21049, MS21049L08K
  • NAS686XNASCatalog only, needs approvalon 1 of 35 stock numbers
  • NASM21047NASCatalog only, needs approvalon 1 of 35 stock numbers
  • NASM21051NASCatalog only, needs approvalon 1 of 35 stock numbers
  • NASM25027NASCatalog only, needs approvalon 1 of 35 stock numbers
  • MS21049MSCatalog only, needs approvalon 1 of 35 stock numbers
  • MS21049L08KMSCatalog only, needs approvalon 1 of 35 stock numbers

Airframer and OEM drawings

    1 more on one stock number each: 59A5A
    • 59A5AUS NavyCatalog only, needs approvalon 1 of 35 stock numbers

    Plus 10 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).

    Get quotes for F52LHTA

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

    Install tooling

    SpecLok has no catalog family for F52LHTA. Tooling for the equivalents:

    What the government paid

    DLA awards on 11 of 35 stock numbers, 98 awards from 2023-03-22 to 2026-09-14.

    Latest award per stock number: $0.22 to $5.32 each.

    DLA production lead time: 83 to 147 days.

    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

    35 stock numbers
    Part numbers DLA FLIS lists for F52LHTA and its equivalents, by stock number
    NSNF52LHTA13615NMF2000MS21059Last DLA price
    5310-00-774-7184F52LHTA35-02
    5310-00-764-7273F52LHTA51-40
    5310-00-764-7275F52LHTA51-054$3.56 2026-07
    5310-00-774-7135F52LHTA54-02
    5310-00-779-3514F52LHTA55-048
    5310-00-779-3515F52LHTA55-054
    5310-00-779-3511F52LHTA55-62
    5310-00-779-3512F52LHTA55-82
    5310-00-774-9781F52LHTA57-02$0.64 2026-01
    5310-00-774-9826F52LHTA57-048
    5310-00-435-9144F52LHTA57-62
    5310-00-774-9737F52LHTA57-82
    5310-00-728-0945F52LHTA58-02$0.33 2023-05
    5310-00-728-0935F52LHTA58-048
    5310-00-728-0944F52LHTA58-82
    Show 20 more sizes
    More sizes
    NSNF52LHTA13615NMF2000MS21059Last DLA price
    5310-00-778-9285F52LHTA517-0213615NM-02F2000-3CW$2.15 2026-09
    5310-00-778-9283F52LHTA517-04813615NM-048F2000-4CW
    5310-01-047-6286F52LHTA517-05413615NM-054F2000-5CW
    5310-00-778-9461F52LHTA517-6213615NM-62F2000-06CW$1.24 2023-12
    5310-00-778-9476F52LHTA517-8213615NM-82F2000-08CW
    5310-00-778-2655F52LHTA521-02MS21059-3$0.22 2026-09
    5310-00-777-5770F52LHTA521-40MS21059-04
    5310-00-777-5769F52LHTA521-048MS21059-4$0.87 2026-05
    5310-00-777-5774F52LHTA521-054MS21059-5$3.40 2026-05
    5310-00-777-5776F52LHTA521-62MS21059-06
    5310-00-777-5778F52LHTA521-064MS21059-6$5.32 2025-12
    5310-00-778-9291F52LHTA517-02BC13615NM-02BCF2000-3BCCW
    5310-00-778-9284F52LHTA517-048BC13615NM-048BCF2000-4BCCW
    5310-00-900-3866F52LHTA521-02BCMS21059-3K
    5310-00-777-5771F52LHTA521-048BCMS21059-4K$1.20 2026-02
    5310-00-777-5777F52LHTA521-62BCMS21059-06K
    5310-00-777-5780F52LHTA521-82BCMS21059-08K$0.76 2023-05
    5310-00-778-9199F52LHTA55-02BC
    5310-00-777-5831F52LHTA57-02BC
    5310-00-762-6104F52LHTA58-82BC

    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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