Cross reference · Howmet Fastening Systems · Plate self-locking nut

K3000 cross referenceESNA RM52LHTA

K3000 is a Howmet plate self-locking nut series on 9 government stock numbers. Its closest equivalents are ESNA RM52LHTA. 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

  • RM52LHTAESNACatalog only, needs approvalon 3 of 9 stock numbers, 3 sizes
  • F52LHTAESNACatalog only, needs approvalon 2 of 9 stock numbers, 2 sizes
10 more on one stock number each: 12620NM, 1620NM, NS103195, RMA9205, T7S1032BC, T7S428BC, T7S428CPC, T7S524BC, T7S524CPC, T7S832BC
  • 12620NMSPS TechnologiesCatalog only, needs approvalon 1 of 9 stock numbers
  • 1620NMSPS TechnologiesCatalog only, needs approvalon 1 of 9 stock numbers
  • NS103195SPS TechnologiesCatalog only, needs approvalon 1 of 9 stock numbers
  • RMA9205ESNACatalog only, needs approvalon 1 of 9 stock numbers
  • T7S1032BCCherry AerospaceCatalog only, needs approvalon 1 of 9 stock numbers
  • T7S428BCCherry AerospaceCatalog only, needs approvalon 1 of 9 stock numbers
  • T7S428CPCCherry AerospaceCatalog only, needs approvalon 1 of 9 stock numbers
  • T7S524BCCherry AerospaceCatalog only, needs approvalon 1 of 9 stock numbers
  • T7S524CPCCherry AerospaceCatalog only, needs approvalon 1 of 9 stock numbers
  • T7S832BCCherry AerospaceCatalog only, needs approvalon 1 of 9 stock numbers

Standards

  • MS21055MSCatalog only, needs approvalon 2 of 9 stock numbers, 2 sizes
  • MS21055LMSCatalog only, needs approvalon 2 of 9 stock numbers, 2 sizes
7 more on one stock number each: NAS1027A, NAS684A, NASM21055L, MS21055L08K, MS21055L3K, MS21055L4K, MS21055L5K
  • NAS1027ANASCatalog only, needs approvalon 1 of 9 stock numbers
  • NAS684ANASCatalog only, needs approvalon 1 of 9 stock numbers
  • NASM21055LNASCatalog only, needs approvalon 1 of 9 stock numbers
  • MS21055L08KMSCatalog only, needs approvalon 1 of 9 stock numbers
  • MS21055L3KMSCatalog only, needs approvalon 1 of 9 stock numbers
  • MS21055L4KMSCatalog only, needs approvalon 1 of 9 stock numbers
  • MS21055L5KMSCatalog only, needs approvalon 1 of 9 stock numbers

Airframer and OEM drawings

    1 more on one stock number each: BACN10KF
    • BACN10KFBoeingCatalog only, needs approvalon 1 of 9 stock numbers

    Plus 9 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).

    Get quotes for K3000

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

    Install tooling

    SpecLok has no catalog family for K3000. Tooling for the equivalents:

    None of the equivalents is in the SpecLok catalog yet.

    What the government paid

    DLA awards on 2 of 9 stock numbers, 2 awards from 2024-12-19 to 2025-04-16.

    Latest award per stock number: $4.16 to $9.62 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 K3000 and its equivalents, by stock number
    NSNK3000RM52LHTA12620NMT7S1032BCMS21055NAS1027ALast DLA price
    5310-00-779-6621K3000-6$4.16 2024-12
    5310-00-838-4873K3000-7NAS1027A8
    5310-00-224-1191K3000-08BAC
    5310-00-778-9277K3000-08BCRM52LHTA55-82BC
    5310-00-778-9278K3000-3BCRM52LHTA55-02BCT7S1032BC
    5310-00-778-9279K3000-4BCRM52LHTA55-048BC$9.62 2025-04
    5310-00-779-3514K3000-4CW12620NM-48MS21055-4
    5310-00-778-9280K3000-5BC
    5310-00-779-3515K3000-5CWMS21055-5

    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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