Cross reference · MS (US military standards) · Extended washer self-locking nut
MS21043 cross referenceSPS FN1014, Cherry T99C
MS21043 is a extended washer self-locking nut series on 19 government stock numbers. Its closest equivalents are SPS FN1014, Cherry T99C. Each one is labeled with how strong the evidence is.
- Issued by MS
- Item Extended washer self-locking nut
- Stock numbers 19
- Equivalents 19
- DLA paid $0.30 to $4.15
Equivalents in the government catalog
Catalog-only listings need engineering approval before you substitute.
Manufacturers
- FN1014SPS TechnologiesCatalog only, needs approvalon 7 of 19 stock numbers, 7 sizes
- T99CCherry AerospaceCatalog only, needs approvalon 7 of 19 stock numbers, 7 sizes
- MN19Hi-ShearCatalog only, needs approvalon 4 of 19 stock numbers, 4 sizes
- H41LHowmet Fastening SystemsCatalog only, needs approvalon 3 of 19 stock numbers, 3 sizes
3 more on one stock number each: FN812, T4590, T4868C
- FN812SPS TechnologiesCatalog only, needs approvalon 1 of 19 stock numbers
- T4590Cherry AerospaceCatalog only, needs approvalon 1 of 19 stock numbers
- T4868CHowmet Fastening SystemsCatalog only, needs approvalon 1 of 19 stock numbers
Standards
Airframer and OEM drawings
10 more on one stock number each: 36A224639P, 3M129C, 961C, B70159, R1160P, R1160P04B, R1160P04C, R1160P04D, ST16126, ST16130
- 36A224639PGECatalog only, needs approvalon 1 of 19 stock numbers
- 3M129CBoeingCatalog only, needs approvalon 1 of 19 stock numbers
- 961CCollins AerospaceCatalog only, needs approvalon 1 of 19 stock numbers
- B70159MBDACatalog only, needs approvalon 1 of 19 stock numbers
- R1160PGECatalog only, needs approvalon 1 of 19 stock numbers
- R1160P04BGECatalog only, needs approvalon 1 of 19 stock numbers
- R1160P04CGECatalog only, needs approvalon 1 of 19 stock numbers
- R1160P04DGECatalog only, needs approvalon 1 of 19 stock numbers
- ST16126BAE SystemsCatalog only, needs approvalon 1 of 19 stock numbers
- ST16130HoneywellCatalog only, needs approvalon 1 of 19 stock numbers
Plus 54 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).
Get quotes for MS21043
Cited equivalents go on the request as acceptable alternates. Catalog-only listings do not.
Install tooling
SpecLok has no catalog family for MS21043. Tooling for the equivalents:
None of the equivalents is in the SpecLok catalog yet.
What the government paid
DLA awards on 11 of 19 stock numbers, 183 awards from 2023-01-31 to 2026-09-14.
Latest award per stock number: $0.30 to $4.15 each.
DLA production lead time: 120 to 549 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
| NSN | MS21043 | FN1014 | T99C | MN19 | H41L | NASM21043 | Last DLA price |
|---|---|---|---|---|---|---|---|
| 5310-00-113-4205 | MS21043-3 | $4.15 2026-09 | |||||
| 5310-00-844-3302 | MS21043-3 | FN1014-1032 | T99C1032 | MN19-3 | $0.56 2025-02 | ||
| 5310-01-463-8817 | MS21043-3 | ||||||
| 5310-00-878-3292 | MS21043-04 | FN1014-440 | T99C440 | MN19-04 | H41L04 | $0.38 2023-11 | |
| 5310-00-719-5570 | MS21043-4 | $0.30 2024-02 | |||||
| 5310-00-844-4872 | MS21043-4 | FN1014-428 | T99C428 | NASM21043-4 | $0.61 2026-09 | ||
| 5310-01-463-8779 | MS21043-4 | ||||||
| 5310-00-881-0944 | MS21043-5 | FN1014-524 | T99C524 | NASM21043-5 | $1.05 2026-08 | ||
| 5310-00-878-3291 | MS21043-06 | FN1014-632 | T99C632 | MN19-06 | H41L06 | $0.38 2026-04 | |
| 5310-01-497-4168 | MS21043-06 | ||||||
| 5310-01-663-9015 | MS21043-06 | ||||||
| 5310-00-881-0943 | MS21043-6 | FN1014-624 | T99C624 | $1.03 2026-09 | |||
| 5310-00-878-7196 | MS21043-08 | FN1014-832 | T99C832 | MN19-08 | H41L08 | $1.39 2025-10 | |
| 5310-01-505-2644 | MS21043-08 | ||||||
| 5310-01-713-4581 | MS21043-04N | NASM21043 |
Show 4 more sizes
| NSN | MS21043 | FN1014 | T99C | MN19 | H41L | NASM21043 | Last DLA price |
|---|---|---|---|---|---|---|---|
| 5310-01-616-3908 | MS21043-06N | $1.82 2025-06 | |||||
| 5310-01-682-8072 | MS21043-3N | $1.89 2026-09 | |||||
| 5310-01-682-8067 | MS21043-4N | ||||||
| 5310-01-727-5488 | MS21043-5N |
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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