Cross reference · ESNA · Plate self-locking nut

RM52LHTA57M cross referenceCherry MT12S, SPS MA12610, Howmet MK2000, NAS696A

RM52LHTA57M is a ESNA plate self-locking nut series on 8 government stock numbers. Its closest equivalents are Cherry MT12S, SPS MA12610, Howmet MK2000, NAS696A. 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

  • MT12SCherry AerospaceCatalog only, needs approvalon 4 of 8 stock numbers, 4 sizes
  • MA12610SPS TechnologiesCatalog only, needs approvalon 3 of 8 stock numbers, 3 sizes
  • MK2000Howmet Fastening SystemsCatalog only, needs approvalon 3 of 8 stock numbers, 3 sizes
  • M12610SPS TechnologiesCatalog only, needs approvalon 2 of 8 stock numbers, 2 sizes
8 more on one stock number each: M12700E, MK2300, MT12S524BC, MT12S832BC, RM100A, RM100A08K, RM100A3K, RM100A5K
  • M12700ESPS TechnologiesCatalog only, needs approvalon 1 of 8 stock numbers
  • MK2300Howmet Fastening SystemsCatalog only, needs approvalon 1 of 8 stock numbers
  • MT12S524BCCherry AerospaceCatalog only, needs approvalon 1 of 8 stock numbers
  • MT12S832BCCherry AerospaceCatalog only, needs approvalon 1 of 8 stock numbers
  • RM100AHowmet Fastening SystemsCatalog only, needs approvalon 1 of 8 stock numbers
  • RM100A08KHowmet Fastening SystemsCatalog only, needs approvalon 1 of 8 stock numbers
  • RM100A3KHowmet Fastening SystemsCatalog only, needs approvalon 1 of 8 stock numbers
  • RM100A5KHowmet Fastening SystemsCatalog only, needs approvalon 1 of 8 stock numbers

Standards

  • NAS696ANASCatalog only, needs approvalon 4 of 8 stock numbers, 3 sizes
4 more on one stock number each: MS21071L, MS21071L08K, MS21071L3K, MS21071L5K
  • MS21071LMSCatalog only, needs approvalon 1 of 8 stock numbers
  • MS21071L08KMSCatalog only, needs approvalon 1 of 8 stock numbers
  • MS21071L3KMSCatalog only, needs approvalon 1 of 8 stock numbers
  • MS21071L5KMSCatalog only, needs approvalon 1 of 8 stock numbers

Airframer and OEM drawings

    3 more on one stock number each: BACN10JP3B, GN10B, Z00N
    • BACN10JP3BBoeingCatalog only, needs approvalon 1 of 8 stock numbers
    • GN10BNorthrop GrummanCatalog only, needs approvalon 1 of 8 stock numbers
    • Z00NDaherCatalog only, needs approvalon 1 of 8 stock numbers

    Plus 1 reference number whose issuer SpecLok does not identify (distributors and catalog agencies are not named).

    Get quotes for RM52LHTA57M

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

    Install tooling

    SpecLok has no catalog family for RM52LHTA57M. Tooling for the equivalents:

    None of the equivalents is in the SpecLok catalog yet.

    What the government paid

    DLA awards on 2 of 8 stock numbers, 6 awards from 2023-02-07 to 2026-04-01.

    Latest award per stock number: $1.05 to $4.00 each.

    DLA production lead time: 120 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

    8 stock numbers
    Part numbers DLA FLIS lists for RM52LHTA57M and its equivalents, by stock number
    NSNRM52LHTA57MMT12SMA12610MK2000NAS696AMS21071LLast DLA price
    5310-00-655-6162RM52LHTA57M02MA12610-02MK2000-3NAS696A3
    5310-00-655-5880RM52LHTA57M-40MT12S440NAS696A04
    5310-00-660-2977RM52LHTA57M048MT12S428MK2000-4NAS696A4
    5310-00-734-1878RM52LHTA57M-054MT12S524MA12610-054MS21071L5
    5310-00-619-3547RM52LHTA57M-62MT12S632NAS696A06$1.05 2025-12
    5310-00-764-1790RM52LHTA57M-02BCMK2000-3BC$4.00 2026-04
    5310-00-764-1788RM52LHTA57M-054BCMA12610-054BC
    5310-00-764-1758RM52LHTA57M-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.

    Next · 3 Quote

    Quote RM52LHTA57M or an equivalent

    Get quotes adds the part and its install tooling to your quote. Check another part number in the cross reference.

    Open your quote →Look up a specific size →All cross references →