Cross reference · SPS Technologies · Plate self-locking nut

NS103203 cross referenceHowmet F5000, Cherry T8091S, ESNA RM52LHTA, MS21059L

NS103203 is a SPS plate self-locking nut series on 8 government stock numbers. Its closest equivalents are Howmet F5000, Cherry T8091S, ESNA RM52LHTA, MS21059L. 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

  • F5000Howmet Fastening SystemsCatalog only, needs approvalon 8 of 8 stock numbers, 9 sizes
  • VN152AHowmet Fastening SystemsCatalog only, needs approvalon 8 of 8 stock numbers, 8 sizes
  • T8091SCherry AerospaceCatalog only, needs approvalon 6 of 8 stock numbers, 9 sizes
  • RM52LHTAESNACatalog only, needs approvalon 4 of 8 stock numbers, 4 sizes
  • BRF200AHowmet Fastening SystemsCatalog only, needs approvalon 3 of 8 stock numbers, 3 sizes
  • RF200AHowmet Fastening SystemsCatalog only, needs approvalon 2 of 8 stock numbers, 2 sizes
6 more on one stock number each: BRF200A3K, BRF200A4K, MF1000, RF200A3K, RF200A4K, RF200L
  • BRF200A3KHowmet Fastening SystemsCatalog only, needs approvalon 1 of 8 stock numbers
  • BRF200A4KHowmet Fastening SystemsCatalog only, needs approvalon 1 of 8 stock numbers
  • MF1000Howmet Fastening SystemsCatalog only, needs approvalon 1 of 8 stock numbers
  • RF200A3KHowmet Fastening SystemsCatalog only, needs approvalon 1 of 8 stock numbers
  • RF200A4KHowmet Fastening SystemsCatalog only, needs approvalon 1 of 8 stock numbers
  • RF200LHowmet Fastening SystemsCatalog only, needs approvalon 1 of 8 stock numbers

Standards

  • MS21059LMSCatalog only, needs approvalon 4 of 8 stock numbers, 4 sizes
3 more on one stock number each: MS21059L3K, MS21059L4K, NAS686A
  • MS21059L3KMSCatalog only, needs approvalon 1 of 8 stock numbers
  • MS21059L4KMSCatalog only, needs approvalon 1 of 8 stock numbers
  • NAS686ANASCatalog only, needs approvalon 1 of 8 stock numbers

Airframer and OEM drawings

  • Z00NDaherCatalog only, needs approvalon 5 of 8 stock numbers, 5 sizes
10 more on one stock number each: 575R975HO, BACN10JN, BACN10JR06F, BACN10JR3F, BACN10JR3FR, BACN10JR4F, BACN10JR4FR, BACN10JR5F, BACN10JR6F, BACN10LFF
  • 575R975HONorthrop GrummanCatalog only, needs approvalon 1 of 8 stock numbers
  • BACN10JNBoeingCatalog only, needs approvalon 1 of 8 stock numbers
  • BACN10JR06FBoeingCatalog only, needs approvalon 1 of 8 stock numbers
  • BACN10JR3FBoeingCatalog only, needs approvalon 1 of 8 stock numbers
  • BACN10JR3FRBoeingCatalog only, needs approvalon 1 of 8 stock numbers
  • BACN10JR4FBoeingCatalog only, needs approvalon 1 of 8 stock numbers
  • BACN10JR4FRBoeingCatalog only, needs approvalon 1 of 8 stock numbers
  • BACN10JR5FBoeingCatalog only, needs approvalon 1 of 8 stock numbers
  • BACN10JR6FBoeingCatalog only, needs approvalon 1 of 8 stock numbers
  • BACN10LFFBoeingCatalog only, needs approvalon 1 of 8 stock numbers

Plus 12 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).

Get quotes for NS103203

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

Install tooling

SpecLok has no catalog family for NS103203. Tooling for the equivalents:

What the government paid

DLA awards on 6 of 8 stock numbers, 45 awards from 2023-01-05 to 2026-06-23.

Latest award per stock number: $0.33 to $2.13 each.

DLA production lead time: 149 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 NS103203 and its equivalents, by stock number
NSNNS103203F5000T8091SRM52LHTAMS21059LNAS686ALast DLA price
5310-00-174-4794NS103203-02F5000-3BACT8091S1032$0.33 2023-05
5310-00-777-5793NS103203-048F5000-4BACT8091S428MS21059L4$0.89 2026-06
5310-00-777-5795NS103203-054F5000-5BACT8091S524RM52LHTA521-054MS21059L5
5310-00-777-5785NS103203-62F5000-06BACT8091S632RM52LHTA521-62MS21059L06NAS686A06$0.54 2026-04
5310-00-255-4579NS103203-064F5000-6BACT8091S624
5310-00-777-5787NS103203-82F5000-08BACT8091S832MS21059L08$0.60 2026-04
5310-00-777-5792NS103203-02BCF5000-3BCBACRM52LHTA521-02BC$0.82 2026-05
5310-00-777-5794NS103203-048BCF5000-4BCBACRM52LHTA521-048BC$2.13 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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