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

MK1000 cross referenceSPS M12600, Cherry T8076S

MK1000 is a Howmet plate self-locking nut series on 13 government stock numbers. Its closest equivalents are SPS M12600, Cherry T8076S. Each one is labeled with how strong the evidence is.

Equivalents in the government catalog

13 stock numbers

Catalog-only listings need engineering approval before you substitute.

Manufacturers

  • M12600SPS TechnologiesCatalog only, needs approvalon 7 of 13 stock numbers, 7 sizes
  • NS103197SPS TechnologiesCatalog only, needs approvalon 7 of 13 stock numbers, 7 sizes
  • T8076SCherry AerospaceCatalog only, needs approvalon 6 of 13 stock numbers, 6 sizes
9 more on one stock number each: MA12600, MT2S, MT2S1032BC, MT2S428BC, MT2S832BC, MTL2S632BC, RM52LHTAS1M, RMA920/M, T8076S832BC
  • MA12600SPS TechnologiesCatalog only, needs approvalon 1 of 13 stock numbers
  • MT2SCherry AerospaceCatalog only, needs approvalon 1 of 13 stock numbers
  • MT2S1032BCCherry AerospaceCatalog only, needs approvalon 1 of 13 stock numbers
  • MT2S428BCCherry AerospaceCatalog only, needs approvalon 1 of 13 stock numbers
  • MT2S832BCCherry AerospaceCatalog only, needs approvalon 1 of 13 stock numbers
  • MTL2S632BCCherry AerospaceCatalog only, needs approvalon 1 of 13 stock numbers
  • RM52LHTAS1MESNACatalog only, needs approvalon 1 of 13 stock numbers
  • RMA920/MESNACatalog only, needs approvalon 1 of 13 stock numbers
  • T8076S832BCCherry AerospaceCatalog only, needs approvalon 1 of 13 stock numbers

Standards

  • MS21069LMSCatalog only, needs approvalon 2 of 13 stock numbers, 2 sizes
  • NAS697ANASCatalog only, needs approvalon 2 of 13 stock numbers, 2 sizes
5 more on one stock number each: MS21069L06K, MS21069L08K, MS21069L3K, MS21069L4K, NAS697A06L
  • MS21069L06KMSCatalog only, needs approvalon 1 of 13 stock numbers
  • MS21069L08KMSCatalog only, needs approvalon 1 of 13 stock numbers
  • MS21069L3KMSCatalog only, needs approvalon 1 of 13 stock numbers
  • MS21069L4KMSCatalog only, needs approvalon 1 of 13 stock numbers
  • NAS697A06LNASCatalog only, needs approvalon 1 of 13 stock numbers

Airframer and OEM drawings

  • GN10ANorthrop GrummanCatalog only, needs approvalon 3 of 13 stock numbers, 3 sizes
10 more on one stock number each: BACN10JP, BACN10JP04A, BACN10JP06A, BACN10JP08AR, BACN10JP3A, BACN10JP4A, BACN10JPSA, G4609, S987, Z00N
  • BACN10JPBoeingCatalog only, needs approvalon 1 of 13 stock numbers
  • BACN10JP04ABoeingCatalog only, needs approvalon 1 of 13 stock numbers
  • BACN10JP06ABoeingCatalog only, needs approvalon 1 of 13 stock numbers
  • BACN10JP08ARBoeingCatalog only, needs approvalon 1 of 13 stock numbers
  • BACN10JP3ABoeingCatalog only, needs approvalon 1 of 13 stock numbers
  • BACN10JP4ABoeingCatalog only, needs approvalon 1 of 13 stock numbers
  • BACN10JPSABoeingCatalog only, needs approvalon 1 of 13 stock numbers
  • G4609Northrop GrummanCatalog only, needs approvalon 1 of 13 stock numbers
  • S987Northrop GrummanCatalog only, needs approvalon 1 of 13 stock numbers
  • Z00NDaherCatalog only, needs approvalon 1 of 13 stock numbers

Plus 30 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).

Get quotes for MK1000

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

Install tooling

SpecLok has no catalog family for MK1000. Tooling for the equivalents:

What the government paid

DLA awards on 5 of 13 stock numbers, 8 awards from 2023-03-15 to 2026-04-29.

Latest award per stock number: $0.28 to $0.71 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

13 stock numbers
Part numbers DLA FLIS lists for MK1000 and its equivalents, by stock number
NSNMK1000M12600T8076SMS21069LNAS697AGN10ALast DLA price
5310-00-616-2481MK1000-5T8076S524G-N10A-524
5310-00-616-1465MK1000-428M12600-048NAS697A4GN10A428
5310-00-842-8999MK1000-632M12600-62GN10A632
5310-01-151-1035MK1000-04BACT8076S440
5310-00-224-0516MK1000-06BACT8076S632
5310-00-728-7721MK1000-06BCM12600-62BC
5310-00-728-7715MK1000-08BACM12600-82T8076S832MS21069L08NAS697A08$0.52 2026-04
5310-00-728-7722MK1000-08BCM12600-82BC$0.71 2024-12
5310-01-630-6678MK1000-08BCBAC
5310-00-891-3662MK1000-3BACT8076S1032$0.70 2025-03
5310-00-728-7723MK1000-3BCM12600-02BC$0.43 2024-05
5310-00-728-7717MK1000-4BACT8076S428MS21069L4$0.28 2023-03
5310-00-728-7724MK1000-4BCM12600-048BC

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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