Cross reference · Howmet Fastening Systems · Plate self-locking nut
F2031 cross referenceESNA LHTA517, MS21062
F2031 is a Howmet plate self-locking nut series on 10 government stock numbers. Its closest equivalents are ESNA LHTA517, MS21062. Each one is labeled with how strong the evidence is.
- Issued by Howmet Fastening Systems
- Item Plate self-locking nut
- Stock numbers 10
- Equivalents 19
- DLA paid $0.75 to $3.45
Equivalents in the government catalog
Catalog-only listings need engineering approval before you substitute.
Manufacturers
- LHTA517ESNACatalog only, needs approvalon 8 of 10 stock numbers, 8 sizes
11 more on one stock number each: 101F, NS103085S, T66C1032C, T66C1032CBC, T66C1032CPWB, T66C428CBC, T66C428CPWB, T66C524C, T66C524CBC, T66C632C, T66C832CBC
- 101FESNACatalog only, needs approvalon 1 of 10 stock numbers
- NS103085SSPS TechnologiesCatalog only, needs approvalon 1 of 10 stock numbers
- T66C1032CCherry AerospaceCatalog only, needs approvalon 1 of 10 stock numbers
- T66C1032CBCCherry AerospaceCatalog only, needs approvalon 1 of 10 stock numbers
- T66C1032CPWBCherry AerospaceCatalog only, needs approvalon 1 of 10 stock numbers
- T66C428CBCCherry AerospaceCatalog only, needs approvalon 1 of 10 stock numbers
- T66C428CPWBCherry AerospaceCatalog only, needs approvalon 1 of 10 stock numbers
- T66C524CCherry AerospaceCatalog only, needs approvalon 1 of 10 stock numbers
- T66C524CBCCherry AerospaceCatalog only, needs approvalon 1 of 10 stock numbers
- T66C632CCherry AerospaceCatalog only, needs approvalon 1 of 10 stock numbers
- T66C832CBCCherry AerospaceCatalog only, needs approvalon 1 of 10 stock numbers
Standards
- MS21062MSCatalog only, needs approvalon 10 of 10 stock numbers, 10 sizes
1 more on one stock number each: NASM21062
- NASM21062NASCatalog only, needs approvalon 1 of 10 stock numbers
Airframer and OEM drawings
5 more on one stock number each: 33A2765K, 33A27C08K, 33A27C3K, 33A27C4K, BACN10KB3CF
- 33A2765KLockheed MartinCatalog only, needs approvalon 1 of 10 stock numbers
- 33A27C08KLockheed MartinCatalog only, needs approvalon 1 of 10 stock numbers
- 33A27C3KLockheed MartinCatalog only, needs approvalon 1 of 10 stock numbers
- 33A27C4KLockheed MartinCatalog only, needs approvalon 1 of 10 stock numbers
- BACN10KB3CFBoeingCatalog only, needs approvalon 1 of 10 stock numbers
Plus 11 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).
Get quotes for F2031
Cited equivalents go on the request as acceptable alternates. Catalog-only listings do not.
Install tooling
SpecLok has no catalog family for F2031. Tooling for the equivalents:
None of the equivalents is in the SpecLok catalog yet.
What the government paid
DLA awards on 3 of 10 stock numbers, 12 awards from 2023-03-22 to 2026-04-02.
Latest award per stock number: $0.75 to $3.45 each.
DLA production lead time: 63 to 250 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 | F2031 | LHTA517 | NS103085S | T66C1032C | MS21062 | NASM21062 | Last DLA price |
|---|---|---|---|---|---|---|---|
| 5310-01-203-5306 | F2031-04 | MS21062-04 | |||||
| 5310-00-783-7897 | F2031-5 | LHTA517-2860-054 | MS21062-5 | ||||
| 5310-00-778-9127 | F2031-06 | LHTA517-2860-62 | MS21062-06 | $0.95 2024-04 | |||
| 5310-00-778-9123 | F2031-08BC | LHTA517-2860-82BC | MS21062-08K | ||||
| 5310-00-779-3601 | F2031-3BAC | NS103085S-02 | T66C1032C | MS21062-3 | $0.75 2025-03 | ||
| 5310-00-779-3605 | F2031-3BC | LHTA517-2860-02BC | MS21062-3K | $3.45 2026-04 | |||
| 5310-00-539-5114 | F2031-3P | LHTA517-2860P-02 | MS21062-3W | ||||
| 5310-00-779-3600 | F2031-4BC | LHTA517-2860-048BC | MS21062-4K | NASM21062-4K | |||
| 5310-00-557-4672 | F2031-4P | LHTA517-2860P-048 | MS21062-4W | ||||
| 5310-00-779-3609 | F2031-5BC | LHTA517-2860-054BC | MS21062-5K |
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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