Cross reference · MS (US military standards) · Plate self-locking nut

MS21061L cross referenceHowmet F2000, SPS NS103185, ESNA RM52LHTA, Daher Z00N

MS21061L is a plate self-locking nut series on 8 government stock numbers. Its closest equivalents are Howmet F2000, SPS NS103185, ESNA RM52LHTA, Daher Z00N. 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

  • F2000Howmet Fastening SystemsCatalog only, needs approvalon 4 of 8 stock numbers, 14 sizes
  • VN151AHowmet Fastening SystemsCatalog only, needs approvalon 4 of 8 stock numbers, 4 sizes
  • BRF100AHowmet Fastening SystemsCatalog only, needs approvalon 3 of 8 stock numbers, 3 sizes
  • NS103185SPS TechnologiesCatalog only, needs approvalon 3 of 8 stock numbers, 3 sizes
  • RF100AHowmet Fastening SystemsCatalog only, needs approvalon 3 of 8 stock numbers, 3 sizes
  • RM52LHTAESNACatalog only, needs approvalon 3 of 8 stock numbers, 3 sizes
6 more on one stock number each: T66S1032S, T66S428S, T66S440S, T66S832S, T8114S1032S, T8114S428S
  • T66S1032SCherry AerospaceCatalog only, needs approvalon 1 of 8 stock numbers
  • T66S428SCherry AerospaceCatalog only, needs approvalon 1 of 8 stock numbers
  • T66S440SCherry AerospaceCatalog only, needs approvalon 1 of 8 stock numbers
  • T66S832SCherry AerospaceCatalog only, needs approvalon 1 of 8 stock numbers
  • T8114S1032SCherry AerospaceCatalog only, needs approvalon 1 of 8 stock numbers
  • T8114S428SCherry AerospaceCatalog only, needs approvalon 1 of 8 stock numbers

Standards

    1 more on one stock number each: NAS687A
    • NAS687ANASCatalog only, needs approvalon 1 of 8 stock numbers

    Airframer and OEM drawings

    • Z00NDaherCatalog only, needs approvalon 2 of 8 stock numbers, 2 sizes
    6 more on one stock number each: 2JC2772H, BACN10KB08F, BACN10KB3F, BACN10KB5F, GN10AA, R401P
    • 2JC2772HNorthrop GrummanCatalog only, needs approvalon 1 of 8 stock numbers
    • BACN10KB08FBoeingCatalog only, needs approvalon 1 of 8 stock numbers
    • BACN10KB3FBoeingCatalog only, needs approvalon 1 of 8 stock numbers
    • BACN10KB5FBoeingCatalog only, needs approvalon 1 of 8 stock numbers
    • GN10AANorthrop GrummanCatalog only, needs approvalon 1 of 8 stock numbers
    • R401PGECatalog only, needs approvalon 1 of 8 stock numbers

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

    Get quotes for MS21061L

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

    Install tooling

    SpecLok has no catalog family for MS21061L. Tooling for the equivalents:

    None of the equivalents is in the SpecLok catalog yet.

    What the government paid

    DLA awards on 5 of 8 stock numbers, 23 awards from 2023-07-07 to 2026-07-14.

    Latest award per stock number: $0.41 to $109.00 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

    8 stock numbers
    Part numbers DLA FLIS lists for MS21061L and its equivalents, by stock number
    NSNMS21061LF2000NS103185RM52LHTAT66S1032SNAS687ALast DLA price
    5310-00-778-9480MS21061L3F2000-10-1032NS103185-02RM52LHTA517-02T66S1032SNAS687A3$0.52 2026-07
    5310-00-778-9478MS21061L04
    5310-00-778-9482MS21061L4F2000-10-428RM52LHTA517-048$0.91 2026-05
    5310-00-778-9505MS21061L5F2000-10-524NS103185-054RM52LHTA517-054
    5310-00-778-9514MS21061L06$0.49 2025-06
    5310-01-586-6466MS21061L6
    5310-00-778-9511MS21061L08F2000-08BACNS103185-82$0.41 2024-02
    5310-01-629-9758MS21061L8$109.00 2026-05

    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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